The Descent: Weapon Crate Locations

There is one red chest infront of an alter right after entering the area and defeating several Guardians.

A second red chest can be seen on a cliff side to the left of the first red chest that will require several small jumps to reach.

Along the route down the Decent, a silver chest is located about halfway down in the corner of one of the turns, half hidden in some foliage.

After reaching the bottom of the Decent, two more red chests are accessable after defeating all enemies in the area.