Colonels Mountain, Mountain summit in New Brunswick, Canada

Colonels Mountain is a mountain in New Brunswick, Canada, rising to 534 metres (1,752 ft) at the headwaters of the Northwest Miramichi and Sevogle rivers. Its summit is weathered into mushroom-shaped granitic tors, and it lies next to Big Bald Mountain, with Middle, Caribou, Webster, Bill Gray and Robinson peaks nearby.

The mountain's granite formations show that parts of northern New Brunswick remained untouched during the last Wisconsinan glaciation. This geological history shaped the summit's appearance and structure.

The mountain presents opportunities for geological research teams to study the Quaternary period through its distinctive rock formations and terrain features.

No marked trail to the summit is documented; access is off-trail through forest at the headwaters of the Northwest Miramichi and Sevogle rivers. The mountain lies beside Big Bald Mountain, with Middle, Caribou, Webster, Bill Gray and Robinson peaks nearby. Plan for remote terrain and navigation by map and compass.

The summit features several mushroom-shaped granite rocks that developed through long-term natural weathering over geological time. These unusual stone formations created distinctive shapes that catch the eye of visitors exploring the peak.