Day 533:
Before trying to figure out my cave problem I decided I’d tackle my running-out-of-glass problem by digging all day in a river.
It was wet, smelled like fish, and some of the local squid got all up in my face.
(Turns out squid do not like a poke in the snout with a shovel any more than anyone else does… but these squid were nice enough to swim away, while a similar size squid on Old Earth probably would have taken the shovel and hit me with it.)
Anyway I stink of gross but I have a lot of sand to melt down into glass, so the cave is nice and warm and stinks of hot gross.