The Quarry Trail at the Mount Tom State Reservation in Holyoke, Massachusetts is an easy 2.2 mile out-and-out hike that leads out to an old rock quarry. The trail is wide, well maintained, and weave through the woods before reaching the quarry. There are a few areas of exposed trap rock with gentle steams and when the trees are bare there's a view of the Connecticut River.
The trail officially ends at a fence when the trail merges with the Knox Extension Trail (exactly 1 mile into the hike), but you can walk around the fence to get to the quarry. A short walk around the fence brings you to the rock quarry where you can peer down. The first view point of the quarry is roughly halfway up and a trail that appears to follow the edge of the quarry to the top for a higher view; however, it's not recommended that you go any further.
Warning: The short trail, that leads out to the quarry, also ends at fence but the fence is not very long. After getting to this point, there's no fence to protect you from falling into the quarry, so hike at your own risk. From the top of the quarry, its ledges appear to be well over 100ft high.
This trail is for walking/hiking only, no bikes allowed.