Archaeology of the Rivas Region, Nicaragua. Ontario:Wilfrid Laurier University Press abstract on line. Ometepe Petroglyph Project Website (2006). Retrieved October 30, 2006 from the World Wide Web at External links Ometepe Island Tourist Information Site (English, Spanish, Portuguese and other languages) Ometepe Travel Guide Backpacking in Ometepe General and historical information Petroglyphs Archeology Photo Gallery of Ometepe Island Photos of Ometepe Bainbridge Ometepe Sister Islands Association Welcome to Ometepe Tourist Guide (Bilingual English/Spanish) Lake islands of Nicaragua Petroglyphs in North America Biosphere reserves of Nicaragua Rivas Department Lake Nicaragua