sentences:  Archaeological excavations have continued into the 21st century; The South Acropolis was excavated from 2005 through to 2007.The early 21st century excavations of Yaxha formed a part of the Peten Sustainable Development Programme ("Programa de Desarrollo Sostenible de Petén") funded by the Banco Interamericano de Desarollo (Inter-American Development Bank).Yaxha is the third largest ruin in Guatemala, with only Tikal and El Mirador being larger.