It is useful so that way people understand what happened years ago.
Three early forms of communication were petroglyphs, cuneiform, and hieroglyphs.
This growth was rooted in the sustainable management of the region's valuable resources found throughout the ridge lands. For more than three millennia, the Maya were able to support and maintain their society's growth by forging an unusual alliance with their environment. This alliance was a balancing act that supported the development of the Maya civilization over some 40,000 sq km or 15,440 sq miles of space and across some 15 centuries of time.
Most of New Mexico (I would know, I live there), but you would most likely find them in the South or The Northwest corner of the state.