Narrow and precipitous, the mountain offers expansive views from its open, knife-edge summit.

Crag Mountain is composed of quartzite, a weather-resistant metamorphic rock.

The 114 mile (183 km) Metacomet-Monadnock Trail traverses its summit ridge.

Currently (August 2018), the Crag Mountain summit is closed to thru hikers on the M & M Trail at the request of the landowner.

Orange blazes and a well-marked trail continue southerly to the open summit, which affords views of Mt.