How could I make a mountain for my gecko

[Jweaver64]

I want to try and make a little mountain for my tank as it is rather bland... So how could I go about this? I was thinking around 10" high and 5-6" wide. I do not want to have to spend more than 25.00 dollars. Is this possible?

 

[Northstar Herp]

There's a ton of info on the web about this kind of stuff. Try googling a bit for it. But in the meantime, try this- http://geckoforums.net/showthread.php?t=68696&highlight=grout