Photo: José Iriarte. Archaeologists recently discovered eight miles of painted rock face in the Colombian Amazon, sited along the Guayabero River. The Colombian and English researchers studying the works suspect that there could be upward of 100,000 individual paintings on 17 walls, dating from the time when humans first arrived in South America and then traveled through Central America. The thousands of paintings, made by people who lived there 12,500 years ago, have captivated … [Read more...] about Massive Rock Art Discovery in the Amazon