Games : What is this yellow diamond symbol on my map?

I started playing borderlands 2 the other day and a symbol came up on my map while doing The "Note to Self-Person" quest, where you find the stash of the goliathe in The Fridge. Well the symbol is a person stick figure like you would see on a bathroom door in a diamond, all yellow. What is that?

I searched the area, shot a around, tried to open things, melt ice with a flame weapon but it didn't help. I'm just baffled.

I've searched for answers to this question and came up empty handed. I know I'm late to ask but I played before and beat it (not completing everything) but I have no idea what this symbol is on my map. I've never seen it before. I've got picture of it if anyone who runs by this wants to see.