dryfj.com / drycyclist.com (kevin cook)

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01297-rock-art.jpg Sure enough, rock art is to be found up thereThumbnailsA faint hum oozes out of the lava, and it's not the spirit of the rock art whispering at me through the silenceSure enough, rock art is to be found up thereThumbnailsA faint hum oozes out of the lava, and it's not the spirit of the rock art whispering at me through the silenceSure enough, rock art is to be found up thereThumbnailsA faint hum oozes out of the lava, and it's not the spirit of the rock art whispering at me through the silenceSure enough, rock art is to be found up thereThumbnailsA faint hum oozes out of the lava, and it's not the spirit of the rock art whispering at me through the silenceSure enough, rock art is to be found up thereThumbnailsA faint hum oozes out of the lava, and it's not the spirit of the rock art whispering at me through the silence

These symbols might merely be simple graffiti drawn according to the stylistic and cultural conventions of their era, or they might be highly specific functional icons intended to record information or identify waypoints.