You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Las Yucas; Aldama; 40 km NNW of Aldama, Rancho Las Yucas, Sierra de Tamaulipas, slope of Cerro de Las Yucan Remove constraint Place: Las Yucas; Aldama; 40 km NNW of Aldama, Rancho Las Yucas, Sierra de Tamaulipas, slope of Cerro de Las Yucan