Projeto Arqueológico de Salvamento no Territorio Federal de Roraima" (1986, 1987 1989) Cepa (Santa Cruz do Sul) 13 (16): 5–48; 14 (17): 1–81; 16 (19): 5-48- Designs 10 meters above the ground on the sheer exterior face of the rock were probably painted by people standing in canoes on the surface of the now-vanished lake. [