How to retrieve Mask of Yalung in Satish's Sad Room cave?

There are mask you can't retrieve due to unfortunate placement. You are supposed to either retrieve or destroy the masks. In that case you can shoot it through the gate (I wasn't able to destroy with explosives either).

When you face the door there will be a chunk of the door missing in the top left corner above the stone. Equip your explosive arrow and shot your arrow through this gap. If done correctly it will destroy it on the first arrow. Good luck.