We started at the unmarked Carney Springs trailhead and went counter clockwise. This gave us some extra mileage, but I for one was glad to do the Carney side first. The trail up was pretty tough, but had less loose rock and dirt than on the Hieroglyphic Canyon side. We made it up to the peak in about 3 hours. The summit was small but the rocks at the top were great for sitting on and taking in the views, or texting, if that suits you (see picture). We missed the turn off to go down Hieroglyphic Canyon b/c trails go in 4 directions there, and we had a little GPS glitch. That intersection could use a sign...
Someone had marked the trail with ribbon which helped a lot in the lower section of Hieroglyphic Canyon.

The stretch of the Lost Goldmine trail between Hieroglyphic and Carney was longer than we thought, but we were glad to save the flatter trail for the end. Most of it was suitable for a mountain bike. On that section we saw an interesting balancing rock and the beginnings of a Crested Saguaro.