HotelChatter

The cave hotel sits on three acres belted by a natural stream. There's still more water that trickles down the face of a massive rock into a swimming hole fed by rainwater. For air and sunlight, the resort has many natural roof openings.

The entire place runs on solar power, and treated wastewater feeds the trees and lawns that insulate the underground complex. And in every corner are plants of all sizes.

The natural setting doesn't mean you'll lack amenities. There's a doctor on call, ayurvedic massages, a gift shop, air conditioning, and WiFi. And the prices are practically pre-historic with the "Primitive" rooms (yes, that's right) going for about $88 USD a night. You can also choose from the lithic rooms, the lithic suites or the cave suites.

If you want to have a memorable corporate meeting, hold it at Rangamapaba, the hotel's sprawling underground conference center that can comfortably accomodate 700 people in a Roman-style amphitheatre setting.

Check out their astonishing 360-degree virtual tour for a better idea. It's so new there aren't even reviews on TripAdvisor.

But is the Cave Man thing still popular? Those ads worked for Geico but the ABC comedy got canned. So only time will tell if the Cave Men Travel Trend will take off.