English: Bonampak is an ancient Maya archaeological site in the Mexican state of Chiapas. The site is approximately 30 km (19 mi) south of the larger site of Yaxchilan, under which Bonampak was a dependency, and the border with Guatemala. While the site is not overly impressive in terms of spatial or architectural size, it is well known for a number of murals, most especially those located within Structure 1 (The Temple of the Murals). The construction of the site’s structures dates to the Late Classic period (c. AD 580 to 800). In addition to being amongst the most well-preserved Maya murals, the Bonampak murals are noteworthy for debunking early assumptions that the Maya were a peaceful culture of mystics, as the murals clearly depict war and human sacrifice.

What is often referred to as The Temple of the Murals (Structure 1) is a long narrow building with 3 rooms atop a low-stepped pyramid base. The interior walls preserve the finest examples of classic Maya painting, otherwise known only from pottery and occasional small faded fragments. Through a fortunate accident, rainwater seeped into the plaster of the roof in such a way as to cover the interior walls with a layer of slightly transparent calcium carbonate.

The paintings date from 790 and were made as frescos, with no seams in the plaster indicating that each room was painted in a single session during the short time that the plaster was moist. They show the hand of a master artist with a couple of competent assistants. The three rooms show a series of actual events with great realism.

(source: en.wikipedia.org/wiki/Bonampak)