McGinty Mountain, Mountain summit in San Diego County, United States

McGinty Mountain is a gabbroic ridge rising to 665 m in San Diego County, covered mainly in chaparral and reached by a 4.7 mi out-and-back trail. Old 4WD tracks and newer trails run along the ridge, and the climb to the summit passes the visible remains of an old mine.

In the 1900s, a miner named McGinty extracted silicified alaskite aplite from the mountain, which was used to make porcelain wares; the mountain took his name. Remains of that old mine are visible along the climb toward the summit, and several other, less obvious mines lie on the mountain. The mines are sometimes called the "Peg Leg mine" after a local legend linking them to Thomas "Peg Leg" Smith's lost gold mine, and a nearby road is named Peg Leg Mine Road.

The mines on McGinty are sometimes called the "Peg Leg mine," and a local road is named Peg Leg Mine Road. This comes from a local legend linking them to the gold-bearing "Lost Pegleg Mine" of Thomas "Peg Leg" Smith.

The hike takes several hours and is best attempted between November and May when weather conditions are more pleasant. Visitors should bring plenty of water and prepare for steep sections that require physical effort.

The soil has a specialized mineral composition that creates habitat for rare plant species found nowhere else nearby. This mountain supports a significant population of a protected plant variety that thrives only in these specific ground conditions.