It may be, it could also be small.
A grotto is a large cave-like area, often next to water.
A grotto is any type of natural or artificial cave that is used by humans. Many religious shrines are set into grottos.
tube that is s feet long gets waste from small intestine waste stays from 10 to 12 hours
The Large Hadron Collider is the world's largest particle accelerator at 27Km in circumference and is situated 175m below the Earth's surface.