Fort Indiantown Gap Military Reservation combines active military use with carefully managed natural areas that offer diverse habitats and outdoor recreational opportunities within a working training site.
Fort Indiantown Gap Military Reservation, located in Lebanon and Dauphin counties in south-central Pennsylvania, spans over 17,000 acres of predominantly forested and open land used for military training as well as environmental conservation. The natural areas within the reservation provide important habitats for native flora and fauna, including mixed hardwood forests, wetlands, and meadows. These designated natural spots are managed to balance military needs with preservation of ecological values. Wildlife commonly found includes white-tailed deer, wild turkey, various songbirds, and amphibians. The area’s terrain features gentle ridges, valleys, and small streams that contribute to local biodiversity. Historically, the reservation has functioned as a key training ground for the Pennsylvania National Guard since the 1930s and hosts a variety of military exercises. At the same time, public access is permitted on limited trails and during designated times to encourage hiking, mountain biking, and wildlife viewing, while safeguarding sensitive zones. Visitors appreciate the relatively quiet woodlands and opportunities to experience Pennsylvania’s natural habitats away from urban centers. Facilities such as educational signage and maintained trailheads support safe, responsible recreation. Fort Indiantown Gap’s mix of military history, land stewardship, and outdoor recreation creates a distinctive setting for nature enthusiasts who prioritize respect for a multi-use landscape.
Swatara Creek – a scenic waterway supporting diverse aquatic species and recreation
Vernal Pools – critical amphibian breeding habitats protected within the reservation
Clymer Road Trail – popular multi-use trail weaving through mixed forest and meadows
Historic training grounds offering a glimpse into Pennsylvania’s military heritage
A vital waterway running through the reservation supporting fish, amphibians, and recreational fishing opportunities.
Seasonal wetlands that provide breeding grounds for amphibians and contribute to overall biodiversity.
Sections within the military reservation designated for protection of rare plant species and habitats.