Hi degkon! Thanks for the entries, i think i like a little darker blue. The cave concept hadn't come to mind but the idea is good. Maybe with less rock, but keep the entrance idea? i hope it does not seem like I am tearing them apart, I like the design!
So, darker blue, and less stone. ................................................... [An idea came to make the entrance bit like "M" for Montana, still made by stones. Two different versions #5#4]
i like the darker blue on the last few. not quite sure on the M for the cave. Would say lukewarm on the stone or the cave overall, feel free to play with more concepts if you have them.