Thomas Boise, a teamster from Woodstock, New Hampshire, sought shelter under this large boulder when a blizzard in the early 1800's blocked passage for him and his horse on the Notch road. Killing his horse, Boise skinned it and wrapped himself in its hide. Searchers found him under the rock the next day and had to cut away the frozen hide which had saved his life.

Near the boulder you can find a cool spring, picnic tables, and an exceptional view of Cannon Cliffs.

Boise Rock is only accessible from the northbound side of the highway.