An ATV trip to two adjacent destinations in December of 2011. Box Canyon is a long, narrow walled canyon that drains to the south into the Gila River. The relatively soft volcanic rhyolite, tuft and sedimentary rock has eroded into deep canyons and tall, spectacular spires. Martinez Canyon is a spectacular canyon with numerous mine shafts and gold and silver processing relics. Another gallery on this site details the mill and mine shafts.