Underground Colony (Creative Tuesdays)

Creative Tuesdays has prompted us to dig deep for this week's prompt.  The theme, or I should say themes, are either Underground or Under Water.  I've only taken part the past few weeks, but so far, all those participants linking up have provided some very fascinating and impressive work.  So click on over, check out everything that's on display and if you'd like to participate, take a read through the guidelines and link your piece up.

I chose the Underground theme.

Subterranean Staircase