@keithtrailstreasures: This is where worlds collide. Deep in the Huachuca Mountains of southern Arizona, I found a contact zone where granite meets a darker volcanic rock — possibly basalt. These geologic boundaries matter. They tell the story of ancient heat, pressure, and movement deep beneath the earth. Out here, the rocks aren’t random. They’re a record of Arizona’s violent geologic past. And if you know how to read them, the mountains start talking. #Arizona #Geology #EduTok #learnontiktokcontest