have volcanic terrain as a restriction, and when you try to exit onto volcanic terrain you will not be able to. There are no items that allow you to negate this restriction.
The items you see on the terrain are probably there from kicking from ships or similar. I don't think there will be a way to pick them up.
Races that have ocean as a restriction can negate this restriction by having all 3 amphabian survival suit items equipped. (Documented on this rules page: http://www.swcombine.com/rules/?Movement#Non-amphibious_races_moving_on_oceanic_terrain)
Thermal suit negates damage when on open terrain on a hostile planet type; http://www.swcombine.com/rules/?Environments