You can use it to modify the geometry of the planet. Dig tunnels to hide or recharge your hazard protection, dig through mountains, make your own caves, adjust slopes to be able to stand or climb better, blast your way out of caves you get lost in.
Digging tunnels is a super creative way to recharge shield. As far as general mobility I'm pretty good with melee/jeckpacking across almost all terrain. I don't find myself in caves much, I should change that. All good advice though, cheers.