Archaeologists find bones of about 60 mammoths at airport construction site.

(CNN) -- Archaeologists have found the skeletal remains of dozens of huge mammoths at a construction site outside Mexico City.

They've unearthed the bones of about 60 mammoths at the site in Zumpango, where the General Felipe Ángeles International Airport is being built, according to the National Institute of Anthropology and History (INAH).

The area, which is about 30 miles northeast of the capital, was once part of Lake Xaltocan, and scientists believe the animals probably died when they got stuck in the lake, the INAH said in a statement translated from Spanish.

They found the remains of male, female and young mammoths at three sites.

Scientists found no signs that humans had hunted the mammals, but it is possible that people may have used some of them after they got stuck.

The bones were found just a few miles away from a site in Tultepec, where scientists found large traps that were used to catch mammoths about 15,000 years ago. Read the free story.