A dozen people hiked in Harold King Forest on Tuesday as part of Essex National Heritage’s Sails and Trails event.

The walk was led by Swampscott Conservancy members Dick Simmons and Richard Frenkel. Harold King Forest is a 47-acre conservation area in Swampscott that contains a glacial boulder field, diverse vegetation, a stream and wetlands.

Known as Town Forest, Harold King Forest is a critical habitat dedicated solely to conservation use and is under the care and administration of the Conservation Commission. From its highest point, the land slopes down to an extensive swamp with typical wetland plant life. The area features a terminal moraine, along with deciduous trees and shrubs.

Tuesday’s walk was themed around “events that help people discover the winding trails and natural beauty that surrounds us and how we can protect the places we love.”

The Swampscott Conservancy will lead another nature walk on Tuesday, Sept. 22, from the dog park in Swampscott to Eagle Hill in Salem’s Forest River Conservation Area. The walk will run from 11 a.m. to 1 p.m.

There will also be Sails and Trails events at the Swampscott Church of Spiritualism on September 26, a guided tour of the Elihu Thomson House on September 27, and a walking tour of the Olmsted Historic District on September 27.