tdachel wrote:
Excellent carving skills. I like the texture. It looks almost like windswept dunes in some places. Do the little guys climb on it? Did you add color or was that the out of the box color?
tom
Thank you, Tom

It was my first go at the whole thing. I started with the rear piece (started as one, cut into two) which took a few hours combined but I quickly found I was being over-meticulous about the whole process. The sides took ~15min each and were more 'organic' as far as the process went. The central idea was to recreate desert rock found in Egypt for a more homey atmosphere. I used two types of precolored non-sanded grout (one light, one a few shades darker with a very slight red tint). I used the light colored grout for the first few (3?) base layers and added a couple layers of the dark grout mixed with the light grout (~1:2 dark to light ratio for a more gradual color tone) on top, which were later sanded down a bit to reveal the lighter layer beneath for a more weathered appearance. All in all I'm happy with the final product, but as noted am considering adding a layer of sealant for more durability and to act as a better cleaning surface as I've got a feeling it won't last long in it's current state. I just hate the idea of a semi-gloss sheen

Perhaps mixing a bit of the grout with some acrylic base sealant would do the trick?
As for them climbing, I did watch one scale the wall about halfway up but that's about as far as he/she got before loosing grip. I'm actually kind of worried about them getting up to one of the shelves (specifically the one beneath the MVB) since it's so close to the heat source. I guess I'll just have to keep a close eye on them.
Anyway I'm planning on building another identical enclosure which will link up with the other via a few entryways between the two. The second enclosure will include a sand pit for digging, an additional basking site as well as a 'buried' nest box which will be accessed through a 3" corrugated pipe running from the primary enclosure. This way I can keep sand segregated from the feeding area in the primary enclosure and create a mock burrow. And, if worse comes to worse, if they are both males I can separate the two and convert the secondary enclosure into a primary if need be.