Conversation so far:
What is the religion of the Sherpa people ?
Sherpa practise the Nyingmapa, the Ancient school of Buddhism.
What do the majority of Sherpas believe in ?
Sherpa particularly believe in hidden treasures and valleys.
What deities or gods do Sherpa people believe in ?
In addition to Buddha and the great Buddhist divinities, the Sherpa also believe in numerous deities and demons who inhabit every mountain, cave, and forest.
Do Sherpa People have holy men ?

Question: Where do they pray ?
Self-contained rewrite: Where do Sherpa people pray ?