Carlos J Ramirez, Servicio Geológico Ambiental (SEGEOAM) - Costa Rica, Heredia, Costa Rica, Donald A McFarlane, The Claremont Colleges, Keck Science Department, Claremont, CA, United States, Guy Van Rentergem, Association of Flemish Cavers, VVS, Vilvoorde, Belgium and Joyce Lundberg, Carleton University, Department of Geography and Environmental Studies, Ottawa, Canada