The Towle Land is a 112-acre conservation parcel, owned by the Town of Carlisle and managed by the Carlisle Conservation Commission. Eighty-four acres of the property were sold to the town in 1968 by Mrs. Phyllis Towle, widow of Dr. George Towle, a long-time Carlisle resident. Four additional parcels were purchased from abutters from 1968 to 1971.

The property includes a great variety of terrain and wonderful wildlife habitats, including beautiful open rolling fields along Westford Road, low forested rocky hills which show evidence of glacial activity, several small streams, wetlands, and vernal pools. Man-made features include a trail system, wooden bridges, a small pond with an earthen dam, a small parking lot, signs, stone fences, bluebird houses in the field, sugar maple plantings around the fields (courtesy of the Chelmsford Boy Scouts in the 1970s), and possible rock quarry and Native American sites.

The Towle Land has an extensive trail system. Trails are maintained and signs are provided by the Carlisle Trails Committee. The Towle Land trail system is one of the most popular walking, cross-country skiing, and nature-watching places in Town. The trails follow the perimeter of the field from the parking lot and pond area and provide inner and outer loops through the wooded portions of the property. Several wooden bridges cross the streams. Another trail spur leads south to the Bingham Road entrance.

The property is located on the south side of Westford Road, about one-half mile west of the town center. The Towle Land is completely bordered to the north by Westford Road and has a small frontage on the south along Bingham Road. The rest of the property is surrounded by private land. There are two entrances to the Towle Land. The major entrance and parking lot are along Westford Road; this lot holds about 20 cars. There is another marked trail entrance from Bingham Road. There is no parking lot at this entrance and users are cautioned to be aware of the narrow road and driveways of the residents.

The AllTrails website has a description and map of a hike at Towle Land.