Originally Posted by MasterOfSparks
I though it was pretty cool. I'm actually just trying to figure out how to make my basement walls look like a cave. Any suggestions?
Three ways to go, all for different budgets.
Basically, it'll depend on how sophisticated you want to sound when people ask.
You can use fiberglass panels for the texture that will leave the least amount of interior space because of voids behind them to the outer structure.. Good places to hide audio/video equipment and lighting controls. These panels are preformed and interlock together. Used often in the pool industry and lobbys where waterfalls are.
Next, an EIFS system. This will allow a look as tame or radical as you want. It'll be all hand formed, shaped, and painted. This is probably what you see in that picture. Basically, you shape foam board and then cover it with a stucco for texture. Most flexible of the three and the way I've done this.
Last, a combination of real stone and wire mesh blended with stucco/cement. It requires some finishing and is very labor intensive.
I built and designed a home theater once that was a castle with a fully functional draw bridge and its own moat with lemon sharks in it. For the block walls on the exterior of the castle, we used the second method. It allowed us to install an accoustical panel wall system inside without losing too much floor space for the stadium seating.
If you're serious about the project, PM me and I'll get you pointed in the right direction.