There are two types of cenotes (pronounced
These open pits filled with water were used
for everyday household needs. Other cenotes were used for sacrifices
to the gods.
At Chichén Itzá in
Mexico, not far from Cancun, offerings for jade, gold and copper
have been found in addition to human skulls.
A cenote is formed very gradually over time.
It begins with an underground cavern filled with water, and gradually
the limestone wears away overhead.