At the EAA2019 conference in Bern, Tristan of the APN had a chance to sit down and talk to Dr. Chester Liwosz of the Mesa Prieta Petroglyph Project based in New Mexico.

The Mesa Prieta Petroglyph Project (MPPP), a tax-exempt 501 (c)(3) non-profit organization founded in 1999, seeks to preserve petroglyphs on Mesa Prieta through education of the local community and others, and recording what may be well over 100,000 rock images on the mesa.

https://www.mesaprietapetroglyphs.org