I'm working on "A Walk" Story Mission and it's telling me to "Find a Hole 0/1." I went to where I'm supposed to go on the map. I shoot up a bunch of bugs, see this hill like burrow, blow that up, I get a could of rifles and pistols from it, but the mission log doesn't update. I went all over that area, even down stairs. I'm not sure where to go or how to advance this mission. Am I doing something wrong? Thanks!