Question

What are the two main glacier of the himalayan mountains?

Answer 1

Baltoro glacier is located in Jammu and Kashmir in an area called Baltistan on the southern slopes of the central Karakoram Range. 
Siachen Glacier is the second longest glacier outside of the polar regions and largest in the Himalayas-Karakoram region.

Answer 2

Baltoro glacier and siachen are two main glacier of the himalayan mountains