JC and I recently visited a cave in solid marble (The Natural Marble Bridge). Our intention had been to follow up river a short distance to see if there were other caves in the area. You might know the old adage – were there is some caves, there are more. Sadly there were no more that we found, but JC found a hole in another nearby valley that was blowing cold air and about 100 meters away, a hole (on the opposite side of the marble bridge) where it looks like the stream that presently runs through the cave must have sunk at one time. A cave dig might be in order when we run out of other going options.
The Natural Marble bridge has an entrance at one side of an elevated ridge of marble, and a downstream exit on the other side of the ridge. The entry way looks quite ominous and the roar of water is impressive – well out of proportion to the quantity that sinks.
Your passage through the cave is quite magical – traversing through bands of marble of various earthy colors, a granite contact being some short distance into the rock (facing downstream to your right).