The Baba Harbhajan Singh Memorial Temple, located between the Nathula and Jelepla passes, is a significant shrine dedicated to Sepoy Baba Harbhajan Singh of the 23rd Punjab Regiment, who is believed to have died in 1968 during a border patrol. According to local legend, after his disappearance, Baba Harbhajan Singh appeared in the dreams of his fellow soldiers, guiding them to his body and expressing his wish to have a memorial built in his honor. This led to the construction of the temple at Chhokya Chho, at an elevation of around 4000 meters, which has since become a revered pilgrimage site.
The temple, often referred to as Old Baba Mandir, is a place of respect and devotion. Devotees visit the shrine and leave a bottle of water, which they later take back home, believing it has been blessed by the spirit of Baba Harbhajan Singh. Visitors must climb 50 stairs to reach the site where Baba was posted during his service. A newer version of the shrine, known as the New Baba Mandir, has been constructed at the junction of the Kupup-Gnathang Road and the trail leading to Memencho Lake for the convenience of tourists. Despite its religious and cultural significance, the temple remains a quieter spot, less frequented by general tourists, yet it offers a unique and spiritually charged experience for those who do visit.