The last time I went through a cave was when I went to Azalea the first time... That's something I don't feel like repeating, but I did catch an Onix there. Made the trip a bit easier.

[ Snake thought about having a map, and if that would help, but maybe things just worked differently here. That stupid fake-tree Pokemon from years ago was testament enough to that fact. ]

I guess a rock snake would be pretty useless on an icy floor.