Harmonica Arch is a large rock arch located in Lost Creek Wilderness which is a part of Pike National Forest. If you have never been to the Lost Creek Wilderness you are definitely missing out! This is one of the most unique and stunning national forests that I have been to; with huge boulders, odd rock formations, and a lush undergrowth full of wildflowers and bright green grass. It encompasses 120,000 acreas west of Colorado Springs with over 130 miles of hiking trails. Lost Creek earned it's name from the river's numerous disappearances into underground caves and large rock formations, only to reappear further downstream.
There is not much literature about Harmonica Arch and how to hike there, and it would, in fact, be very difficult to find without these directions along the way to reach the arch.
Getting there: The hike starts from the Goose Creek Trailhead in the Lost Creek Wilderness, west of Colorado Springs. I recommend clicking your trip tick on your vehicle for these directions, or use your GPS, the roads are not well marked. To get to the trailhead from my home in the Golden area, west of Denver, take C-470 east to highway 285 west. Stay on 285 for 21 miles to Pine junction. At the intersection in Pine Junction, take a left onto 126 also called Pine Valley Road, South and take this for just under 22 miles.