R - This is right at the start, on the ground by the first concrete block.

R - This is under the ledge that has the two hives on it as well as the Energy Gun. It is right next to the ledge with the very first data post.

A - This is just above the cave entrance at the end of the first area.

A - This is on the wall just above one of the nests on the lower area. On the radar it is to the southwest.

O - This is just on the ledge before the hall where all the Trilid and the one Wasp came out of.

U - This is in the stalactites just after you activate the data post and jump to the lower ledge.