500-year-old lion drawing in Puerto Rican cave may have been made by an enslaved African
- Antiguos Alumnos
Acosta-Colón and Reniel Rodríguez Ramos, an archaeologist at the University of Puerto Rico at Utuado, have radiocarbon-dated some of the drawings in Puerto's Rico's caves to more than 2,000 years ago, according to unpublished research presented Oct. 18 at the Geological Society of America's annual conference in Pittsburgh.