Talyn Agui is situated on a flat steppe 14km northwest from Mount Shiliin Bogd in Dariganga Soum, Sukhbaatar Aimag. Formerly, it was difficult to find the site due to its location on a steppe. But, currently it became easy to find because Ovoo (cairn) was placed near mouth of the cave.

This cave is the largest one among caves discovered in Mongolia. The mouth of the cave is not high enough to enter standing, so one should bow to enter the cave. Just after entering it, the cave is 2m wide, 10m high and the air inside is a cool. 40-50m wide and 30m high icy corridor follows after 30m-continued volcanic rocks. It shimmers like a rainbow, when a light is reflected to the ice. The scene is brilliant. Unfortunately, entering this section became so difficult because the road was blocked by a landslide.