Miller Peak is a landmark mountain located in far-south Arizona near the town of Sierra Vista and the Fort Huachuca Military Base. The summit reaches to 9,700 feet and is one of just five mountains in Arizona with over 5,000 feet of prominence (a so-called "ultra" peak). The summit is accessible via the Crest Trail, which runs along the main range crest (5,3 miles). It is also the first leg of the Arizona Trail, so it was fun to see thru-hikers on their first day heading towards Utah!
It was a beautiful hike, but it was challenging given the length of it (and the fact that we had hiked to the Coronado Cave in the morning on top of it!). The trail is well-designed and is mostly of moderate grade thanks to the many switchbacks. The vegetation changed as we meandered along the ridge from the North Side to the South side. The kids and the dog were delighted to see snow.
Given the peak's proximity to Mexico, there are often border crossers who are entering into the United States via the Crest Trail. There is a border patrol on duty in the Montezuma Pass parking lot and the guy asked our friend Jason if he was carrying a weapon to hike the trail since we could possibly see some smugglers on the trail.
We don’t carry weapons... but it was still interesting to hear that AZ Trail thru-hikers have to pay close attention since the crossers trail are so used that they can be confused with the official trail! Here’s something I found on a hiking site: Attacks on hikers just do not happen. They (the smugglers) want nothing to do with you and will hide given the chance. If you should come across a group, use your best judgement.
This area is defined as a Sky Island since it is high enough to rise above the valley floors of desert scrub or desert grassland without being connected to woodlands. It ranks as the second most biologically diverse ecosystem on the planet because of the overlap and blending of several major biogeographic zones: it is the meeting place of two great deserts, the Chihuahuan and the Sonoran, and two large mountain chains, the Rocky Mountains and the Sierra Madre Occidental. The nearby San Pedro River serves as a migratory super highway for birds and other wildlife, while the Huachuca Mountains host another world of flora and fauna as they rise above 9,000 feet.
If you are planning to visit the Coronado Cave, make sure to bring a headlamp and gloves (as to not alter the rock formations) and I would have liked to have a buff or scarf because of the dust in some areas. The cave is one of the few open, undeveloped caves in southern Arizona. It is 600 feet long and in most places about 70 feet wide. It was super fun to explore!