Depending on the age of the petroglyphs, would be directly or indirectly related to: Characteristics for the Occurrence of a High-Current, Z-Pinch Aurora as Re

Depending on the age of the petroglyphs, would be directly or indirectly related to: Characteristics for the Occurrence of a High-Current, Z-Pinch Aurora as Recorded in Antiquity (2003) https://archive.org/details/anthony-peratt-characteristics-for-the-occurrence-of-a-high-current-zpinch https://archive.org/details/anthony-peratt-characteristics-f... Characteristics For The Occurrence Of A High Current Z Pinch Aurora As Recorded In Antiquity Part II: Directionality And Source (2007) https://archive.org/details/characteristics-for-the-occurrence-of-a-high-current-z-pinch-aurora-as-recorded- https://archive.org/details/characteristics-for-the-occurren...