3 ms·So, a cave in a basalt mountain then. I like your thinking. ;)by MR4D 5y agoSo, a cave in a basalt mountain then. I like your thinking. ;)samstave 5y agoWhat are the load-baring capabilities of a Basalt Cave during the Apocalypse? /MontyPython style...sedatk 5y agoIs that a European basalt cave, or African?