Chac's other names
Chac is the Mayan God of rain, lightning, storms, and fresh water, (Drinking, reservoir sink holes, rivers, etc)
He is also often associated with Chac Mol, the God of Sacrifices.
The Chac Mol statues are seen often in the lost Mayan cities, and their pose suggesting someone could be bent over them to be killed, and the offering bowl
they sometimes hold on their midsection leads people to think they were used for and/or represent sacrifices.
Sacrifices in ancient Mayan culture were most often used to beseech the rain God, Chac, for rain in times of drought.
Painting By Ginger Strivelli (painted in Chichen Itza on one of my trips there.)
Chac, as the God of Rain, was very important to ancient Mayan culture due to the shortages of water during dry seasons. The sink holes where they collected rain
to use during the dry times were seen as Chac's domain, as well as rivers, storms, and such.
He is depicted in the few surviving Mayan Codexes using a dragon to create a rainstorm, and canoeing in a river.
Chac is represented on many Mayan buildings carved with a long elephant-like nose.
In the codexes he sometimes has this odd nose shape...also is often drawn blue like the color of water.
Other times he is shown more normally human looking...and sometimes as the odd posed Chac Mol sculpture.
Photo of Ginger and Harmony Strivelli in 2012 at the 'nunnery' in Chichen Itza, Mexico.
(notice the Chac faces on the building corners, with the elephantine noses.)