One of the four revered Mahasu temples, the Bisoi Mahasu temple is located on the Tiuni road, 89 km from Dehradun. Nestled in the midst of mountains, this temple is dedicated to Botha Maharaj Ji. Bisoi Mahasu ji is considered to be the god of justice, who is highly respected among the locals. The Mahasu deity comprises four brothers Bashik, Botha, Pavasi, and Chalda. Pavasi Maharaj resides in Hanol, Chalda Maharaj in Lakhwar, and Bashik Maharaj's in Mendrath. The temple of Mahasu Maharaj Ji has its own specialty, it is constructed from cedar wood, generously donated by the locals. The workmanship of the temple is so remarkable that it will leave you awestruck. The Jagra held in the month of Bhadon holds special significance., whose spectacle is truly mesmerizing, attracting devotees afar. During the fair, visitors can immerse themselves in the vibrant local culture and witness locals dressed in traditional attire.