The most mega-diverse region in all of the Amazon may be the the Area de Conservacion Regional Comunal de Tamshiyacu-Tahuayo (ACRCTT). Peru’s first state reserve, it covers an expanded area of precious, ecologically diverse western Amazon rainforest. Exceeding 1.1 million acres, its approx. 1,600 square miles covers appreciably more land area than does the state of Rhode Island (1045 sq. mi). The ACRCTT was originally designated a reserve by the Peruvian government in 1991 to protect the range of the rare red uakari monkey. Subsequent scientific research has found one of the world’s richest variety of plants, amphibians, reptiles and birds. In 2003, Chicago’s Field Museum’s Rapid Biology Inventory #11 found more species of mammals and trees in the ACRCTT than any other documented natural area in the entire world.