Kohunlich is a corruption of the name "Cohune Ridge". Cohune is a species of fruiting palm common to the area. Kohunlich used to be known as Clarksville, which is how it is referred to in old maps and reports.
The site is best known for its Temple of the Masks, an Early Classic pyramid whose central stairway is flanked by huge humanized stucco masks. Built around 500 A.D., this is one of the oldest constructions at the site. After 700 A.D., this temple was covered over with a Terminal Classic construction, which protected the masks and accounts for the marvelous state of their preservation today. The only standing remains of the later temple are some steps in the lower portion of the stair.