There are some man-made and natural caves inside the rock.
The temple is placed within the natural cave inside the rocks.
It was not a natural cave, just a space left under some slabs of rock.
She had no doubt it appeared to be a natural cave from the outside.
The creek was so named because of natural caves along its course.
It is a natural cave in solid rock inside the mountain.
The boys wondered if it had been a natural cave.
But this was a natural cave, not a bubble of captured energy.
They were in the middle of a natural cave.
A couple of natural open caves are also present in the vicinity.