Guayabo de Turrialba Archaeological Site

Guayabo National Monument, is an archaeological site near the city of Turrialba, within the Central Conservation Area in the Cartago Province, Costa Rica. It is almost directly in the center of the country on the Southern slope of the Turrialba Volcano. The National Monument covers about 2.3 square kilometres and is surrounded by rainforest plant vegetation causing it to be extremely vibrant green due to high precipitation and rich soils. Only a small portion of it has been unearthed, excavated, and studied.

Source: Wikipedia