 In 1979 he made one of the first crossings by a westerner of the Great Indian (Thar) Desert by camel, in 1980 one of the few land crossings of Tierra del Fuego in Chile, and in 1980 one of the few crossings of the Llanganatis mountain range in Ecuador to reach the Amazon.Reinhard participated in underwater archaeological investigations of sacred lakes of the Incas, including in the crater lake of Licancabur in 1981–82 (the world's highest dive at 19,300 ft), and a lake at 19,100 ft on Paniri volcano in 1983.During 1987 and 2004, he dove in lower-lying lakes near Cuzco (including lakes Urcos, Huacarpay and Piuray), and in the highlands of Ecuador in 2009, while in 2007 and 2010 he was a member of teams that investigated sacred lakes of the Aztecs (13,800 ft) on Toluca volcano in Mexico and underwater archaeological sites in Lake Issyk Kul in Kyrgyzstan in 2010.