The park covers 423 acres, including a six-acre lake, and is surrounded by an 80,000-acre block of Rothrock State Forest. The park office is open 8 a.m. to 4 p.m. Monday through Friday year-round, and daily during the summer season.

A walk through historic Greenwood Furnace evokes images of the community that flourished here from 1834 to 1904. Greenwood Furnace was a busy industrial complex, with all the noise and dirt of a 19th century ironmaking community. The village throbbed with life: the roaring of furnace stacks, the shouts of the workmen, the hissing of the steam engine, the creaking of wagons loaded with charcoal, and the cast house whistle signaling another pour of molten iron. The furnaces were hot (3,000 degrees Fahrenheit) and cast clouds of smoke and cinders into the air, which rained down indiscriminately on grass, people, livestock and buildings, rendering everything sooty and gray. At night, the fire�s red glow lit the sky, probably allowing residents to walk about without lanterns. Greenwood Furnace was a village built around an inferno.

Recreational Opportunities

• Camping: modern sites, some with electricity
  Fifty one (51) forested tent and trailer campsites are open from the second Friday in April until the end of deer season in December. Forty-six (46) campsites have either 30 or 50 amp electric hookups. A washhouse with flush toilets, hot showers and laundry tubs is available.
  
  Trailers and motor homes may use a convenient, sanitary dump station at the campground entrance. The maximum stay is 14 days during the summer season and 21 days during the off-season. Campers must vacate the park for 48 hours between stays.
  
  
• Swimming: A 300-foot sand beach is open from late-May to mid-September, 8 a.m. to sunset. Swim at your own risk. A dressing area and restroom are nearby.
  
  
• Fishing: The six-acre Greenwood Lake is regularly stocked with trout. Ice fishing is permitted. All Pennsylvania Fish and Boat Commission laws and regulations apply.
• Hunting and Firearms: About 320 acres are open to hunting, trapping and the training of dogs during established seasons. Common game species are deer, turkey and grouse. Special state park hunting regulations and Pennsylvania Game Commission laws apply. Most of the adjacent Rothrock State Forest lands are open to hunting.
  
  Hunting woodchucks, also known as groundhogs, is prohibited. Dog training is only permitted from the day following Labor Day through March 31 in designated hunting areas. The Department of Conservation and Natural Resources and the Pennsylvania Game Commission rules and regulations apply. Contact the park office for accessible hunting information.
  
  
• Picnicking: Picnic tables and seven picnic pavilions are in a spruce and pine grove setting close to the beach. Unreserved pavilions are free on a first-come, first-served basis. A playground, snack bar, horseshoe pits, volleyball courts and a ball field make this area popular for picnics and reunions.
  
  
• Orienteering: The self-guiding course starts across the road from the Visitor Center/Park Office. Maps of the course are available at the Visitor Center/Park Office.
  
  
• Winter Activities: Ice skating is popular on the lake. Ice depth is not monitored. The park serves as a snowmobiling trailhead after the end of deer season in December. Several miles of ungroomed cross-country ski trails are in the park and on adjacent state forest lands. Parking, restrooms and picnic facilities are available at the park. Additional designated parking areas are within the state forest. Trail maps are available at the park office or state forest office.