The 600-year-old Serlung Pelkar Chhoeling Monastery in Dawakha, Paro was founded by Drupthop Thangthong Gyalpo (1361-1485) when he built iron bridges for the people in this area. In the meantime, the people living in a place high up on the mountain had to deal with strong winds and storms that caused harm to the people and destroyed crops. The people blamed the infamous lakes in the area. There were two lakes, Yum and Syem (Mother and Daughter), which were believed to be the cause of all the destruction inflicted on the people. In Bhutan, the Bhutanese believe that all living things, including nature, have spirits and are alive within them. For example, the mountains in Bhutan are believed to be the abode of mountain gods, or at least to house spirits. Therefore, people decided to drive away the destructive spirits of the lakes by throwing the dead bodies of people and animals into the lake. The mother lake left its present location for the Dagala region and became known as Dagala Yumtsho, while the daughter lake did not make it further than present-day Selung Goemba. She had problems with her leg. You can still see the remains of the lakes where they rested. The mother advised the daughter to stay in this place and serve as the protector of the Dharma of Drupthop Thangtong Gyalpo in Selung Goemba, and left her her revered Sergi Alung (hook), making the place known as Serlung Goemba. The people of this place considered it auspicious that a lake had formed near a monastery founded by the famous Drupthop Thangtong Gyalpo. The villagers believed that the lake would eliminate famine and bring prosperity to the village, and held a festive sacrifice to ask the spirit of the lake to bless them with protection. The ritual takes place in Selung Goemba once every three years. There is no specific day or month set for its performance, but depends mainly on the availability of the Pawo. The Goemba is a common religious place of worship for the people of Khamdi and Sali and some other neighboring villages.

Tseza Bongkor is a native festival of Tseza Gewog (block) in Dagana with unique lyrics and dance steps performed by what we call in local dialect the Boegarps or the Pazaabs (Male participants/warriors). It is celebrated once in every three years in six villages under Tseza Gewog namely in Zamtog, Samey, Trashigang, Jangsagang, Tsanglaykha and Kalizingkha. In every village, the festival is celebrated for three days and it is mandatory for all the households of that particular village to take part in that celebration. At Samey, the festival is always celebrated on the 14th Day of the first Bhutanese month every three years at a place called Zingkha Pangna and only then, it is celebrated at Trashigang. It is because the festival at Trashigang is also presided over by the same Male Shaman (Pawo) and the Female Shaman (Neljorm) who conducts the festival at Samey. On the last day of the Samey Bonkor i.e. on 16th day of the first Bhutanese month, the Shaman and the Yogini heads towards Trashigang for the celebration of the same. The Trashigang Bonkor begins from 16th and ends on the 18th day of the first Bhutanese month. Although the festival is celebrated for three days in all the six villages but the date of celebration differs in all the villages. For instance the date for celebration of the festival is fixed at Samey and Trashigang but in the remaining four villages the dates are not fixed. They celebrates the festival depending upon the auspicious date that is mentioned in the Bhutanese Datho (Almanic calendar). Every household must dispatch at least one or two representatives (depending upon the number of person living in that house) for the celebration. Usually all the households are represented by two members i.e. one male representative who acts as a Boegarp (male dancer) and one female representative as a dancer. If the household has just one member, that particular person has to represent his or her household. If any household fails to send the member representative/s for the festival, they have to send their substitution or else they have to pay fine. Traditionally, the festival used to be presided over by a Male shaman (Pawo) and a Female shaman (Neljorm) but since the demise of the Pawo few years back, he is replaced by one of the village Lama. There are slight differences in the way the festival is celebrated in these six villages mainly in terms of the date of the celebration, materials and the costumes used in the celebration and the persons involved in the festival. The origin of the festival is still unknown but it is believed that the festival was instituted in the region mainly by the Tseza Nyagoes (Boegarps). According to Ap Sangay Dorji, the festival was instituted mainly to appease the Dralha (deities) in order to overcome any sort of obstacles and epidemics in the region. Tseza Bongkor is still vibrantly performed in the community and there is no major transformation in the way the festival is conducted even today. Traditionally every word written in the book Dralha Pangtoed (Ritual text) was dictated upon the Boegarps by the Pawo which is today replaced by the village Lam. Similarly, the house in which the shaman and the Female shaman live during the celebration Lha chim (shrine) was build using the mated bamboo but today it is constructed using the metal sheets, wood and bamboo. According to some oral history, traditionally the people of this region were following the Bon (locally called Ban choe) religion because of which their festival came to be known as Bangkor, the Bon festival of Tseza Gewog. Some oral tradition also says that during Zhabrung's era, The Pazaabs in Punakha performed their dances in circular (kora chap di) group to celebrate their victory over the Tibetan enemies. For the same reason, the Ngagoes (strong man) or the Boegarps of Tseza Gewog also performed the same dances following the same steps. Hence, the festival came to be known as Tseza Bangkor, the dance performed by Boegarps in a circular group. Tseza Gewog is one of the important Gewog under Dagana Dzongkhag (district) since Dagana falls under Tseza gewog and is where the Dzongkhag Administration's Headquarter is located. One of the most famous and special Temple in Dagana,  Shathong Lhakhang, founded by the Buddhist Master Dupthob (Siddhi) Shawa Ripa in the 18th century is also located under Tseza Gewog. Shawa Ripa is an ancient Buddhist Master who is said to have lived for over 900 years. Oral History also mentions that there is a big tree at Pele, which is believed to be a walking stick of Zhabdrung Jigme Chogyal (1862-1904) and a house in which the Zhabdrung halt his night on the way and back from Daga Dzong.

Nub Tshona-patra literally means "The Great Lake in the West" and is beautifully situated between the ancient trade route of Haa and Tibet. From some sources, "Nub" may also be known as Nob, which means Norbu (precious treasures). Nub Tshona-patra is considered one of the most sacred and revered lakes in Bhutan. It is believed that the lake is so large that two types of vegetation grow on the lake. On the Tsho-gu (head of the lake) grow plants commonly known as Chukar meto (Rheum nobile), which grow only in mountainous regions such as Jomolhari, while on the Tsho-ju (tail of the lake) grow Dungshing plants (Abies densa), which grow in low regions such as the Haa Valley. Nub Tshona-patra is one of the holiest lakes in Bhutan and can be hiked from Haa on many different routes. The most common routes are from Kipri in Uesu gewog, from Karjena in Kartsho gewog via Changzur Nyela to Drakna Trashiding-kha Gonpa and also from Tokey in Bji gewog. Nub Tshona-patra can also be reached through Jula Pass, Talila Pass, from Miri Pun Suum and from Norbugang in Samar gewog. The river that flows through Dozam at the foot of Chana Dorje (Vajrapani bodhisattava) hill is fed by Lake Tshonapatra. This river feeds the Haa fishery at the foot of Chana Dorji hill. This river flows through Nakha Tashigang and Shubji in the Sangbay Gewog and joins the Amochu further downstream. The river from Baytsho also flows along this river. The sanctity of the lake brings about the fact that Terton (treasure revealer) Sherab Mebar (1267-1297?) came to Bhutan from Kham in Tibet in the 13th century at the age of thirteen, settled in Paro Pangbisa and established the Pangpa Ugyen Guru Temple as his seat. Even today, this two-story temple is considered very sacred. According to oral traditions, he was destined to recover treasures from a lake in western Bhutan. He was also destined to visit Bumthang and the Jawar Tsedrag Goenpa (temple). To find the treasures, Terton Sherab Mebar traveled to Haa. After finding the lake (now Nub Tshona-patra), he unveiled many treasures including gold, religious artifacts and religious instruments such as dung (trumpet), Nga (drum), Nge-tok (drumstick) and a pair of Rol-mo (cymbals), among others. Terton was prophesied to visit Nub Tshona-patra seven times. When Terton came across a huge lump of gold in Nub Tshona-patra, it turned into a giant frog as big as a hill and swallowed (and held) all the water of the lake in its mouth. He asked a carpenter to carve the gold nugget into a pillar to be used in Paro Dzong. The carpenter was instructed to take the splinters and fragments of the pillar as payment for his work. However, the carpenter tried to shear off too much of the column in order to receive his wages. The Terton feared that the column would be too short, and when he tried to talk to them about shearing too much out of concern, a drop of water fell out of his nose and spilled into the lake, drowning them all along with the gold. Some locals believe that those who cut off the gold pillar were his one hundred and five monk disciples from the village of Pangbisa, while others say that his team consisted of thirty-two strong men who were farmers and carpenters. The angry deity of the lake Tshodag/Tshomen (mermaid) sensed this and began to pursue the Terton. While he was running for his life, religious instruments such as cymbal, trumpet, drum, drumstick and a sickle fell from him, and lakes sprouted in the place where the treasures fell. Locals know these lakes as Drum Lake (Nga-tsho), Drum Lake (Dungtsho, in Jarey), Drumstick Lake (Ngetok-tsho), Cymbal Lake (Roel-tsho, in Rigona), and Sickle Lake (Zoutsho), which are now found in the Haa Shongana region (also known as Shokuna), including Nub Tshona-patra in Tshona Diga. Ngatsho and Ngetok tsho are located close to each other at Tsoo. Yak herders spend their summers in Tsoo. Locals believe that the Terton also spent time meditating (thukdam/tsham) in Yatokha, the area behind the hills of Ngatsho and Ngetok tsho, to see clear visions and find hidden treasures. Some sources say that the Terton also dropped other treasures such as religious artifacts and religious instruments made of gold, turquoise, silver, shells and a vase during his escape, which led to the formation of Ser-tsho, Yu-tsho, Ngyul-tsho, Dungkar-tsho and Bumpa-tsho (in Jarey Damshog). The terton Sherab Mebar turned into a bird and the angry deity into a falcon. When they reached Tergola (which means "gateway to hidden treasures," as it was believed that many treasures were hidden behind this mountain pass), the deity of the mountain (Tsan) negotiated peace between the Terton and the angry deity of the lake. Some consider this Tsan or Drak-tsen to be Ap Chungdu. Some sources also indicate that the negotiation actually took place in Lab-dza of Tshellu-tsho. It was agreed that both Terton and the deity would not enter their respective territories. Terton and the descendants of his followers would never set foot in Haa Shongana. Similarly, the lake deity agreed not to cross Tergola. Thus, all connections between the people of Haa Shongana and Paro Pangbisa were severed, even though these two places are considered to be close to each other. Even today, when the descendants of the Terton people in Pangbisa cross the Tergola Pass, it rains even when the weather is fine, and people die when they enter the Haa Shongana region. Animals also die when they cross the border, or if animals are traded between these two places, they do not survive. However, some of the locals believe that this border does not apply to livestock. To resolve the conflict between the two, the mountain deity erected five Do-tshams (boundary stones) between Gangche-la and Zou-tsho (Sickle Lake) to mark the border. It is believed that the boundary was initially marked with dried yak and sheep dung, which later turned into stones. The cairns are still preserved today. The Do-tshams are located in Ramzur, under the Uesu gewog. The stone mounds look as if they would collapse at any time. But if you actually touch them, it is not easy to dismantle them or break them into the ground. People say that stones and pebbles can be added to the piled up structures, but they should not be removed or disintegrated. When the Terton died, he left the only Rol-mo treasure (basin) and a Phurpai ku (three-sided ritual dagger statue) in the Pangpa Ugyen Guru Temple. The Phurpa ku can be seen in this temple to this day as one of the Nangten (sacred religious objects). It is said that after the death of Terton, his Kudung (sacred body) was taken from Pangbisa to Rinpung Dzong (fortress). However, the people of Pangbisa wanted to reclaim the Kudung, and when they tried to steal the Kudung through the U-tse (central tower) of Rinpung Dzong, the "head" detached from the Kudung, and the headless Kudung was left in Rinpung Dzong, which later burned in a fire tragedy. Today, the skull of Terton is revered as one of the most important sacred relics of the Pangpa Ugyen Guru Temple. In lieu of formal punishment, the people of Pangbisa had to cede the only treasure, the Rolmo, to the Rinpung Dzong. This cymbal can be visited today as one of the most important sacred relics of the Rinpung Dzong. The cymbal is shown to the public once a year, on the first day of Paro Tsechu, to give blessings, and it is also used to determine the timing of the mask dancers during Tsechu. The other cymbal that belongs to this treasure was newly made; therefore, this pair of cymbals sounds slightly different from the other normal pairs of cymbals. Some believe that the Nub Tshona-patra was originally located in the village of Sangbay Ama in the Sangbay gewog before it was settled in its present location. People say that a mermaid carried the lake in a dung-chung (slender container made of bamboo used to store salt) and planned to move the lake to another location because the lake's location was either dirty or it was time to move away from Sangbay Ama. On the way to the present location of the lake, the mermaid stopped for a night at a Norgi-jangsa (settlement of cattle herders). It is believed that the mermaid gave cattle to the Nublang cattle as a reward for the kindness shown to her by this local herdsman. Today, this particular breed of Tha-nor (low altitude cattle) exists only in the Sangbay gewog of Haa. Before the lake was built on the present site, the place was a Bjobi-lakha (nomadic settlement). The mermaid asked the shepherds to move their camp so that the lake could settle there. The mermaid found that even the next morning the shepherds had not moved away. So, the mermaid emptied the Dung-chung that contained the lake's water, drowning all the shepherds along with their camps. It is believed that some lucky people on a clear day can see the entire Nogi-jangsa, including dogs, yaks and people. Legend has it that once a woman from Tshaphel village was washing clothes on the lakeshore and polluted the lake. Nothing happened to her for five years. But in the sixth year, the lake "consumed" and she drowned along with her livestock and camp. To this day it is believed that at Nya-chhu, the source of Haa fishing, people come across pieces of clothing or Bjob's hat. It is believed that it is a bad sign to find such items. Locals also believe that whenever the waters of Lake Nyaku-na appear in Tshaphel, people either die or mysteriously disappear. It is believed that Dungkar Aekhil (a shell with a right head) appears to those who have good luck when visiting the lake. Lam Duetsi from Dumchog village in Uesu is said to have seen this shell while visiting the lake. Local people believe that a hundred cattle once drowned in the lake because the water of the lake appeared so calm that the cattle mistook the water of the lake for the ground. Later, about nine tethers that were used to tie the cattle were found at the water source that feeds the fishery in Haa.