A cenote is a natural pit or sinkhole, resulting from the collapse of limestone bedrock that exposes groundwater, found throughout the Yucatán Peninsula in Mexico. Some are large, open-water pools while others are small cracks in the earth. The cenotes were the water source for the ancient Maya; today they’re a popular tourist attraction for swimmers, snorkelers, and scuba divers. And there are options for scuba diving in the cenotes for all levels of certified divers. I’ll explain the different options and what to consider.