cenote
(noun)
noun
1. A deep natural well or sinkhole, especially in Central America, formed by the collapse of surface limestone that exposes ground water underneath, and sometimes used by the ancient Mayans for sacrificial offerings.
(noun)
1. A deep natural well or sinkhole, especially in Central America, formed by the collapse of surface limestone that exposes ground water underneath, and sometimes used by the ancient Mayans for sacrificial offerings.