The only wild horses that will be “forever” may be the ones pictured on this stamp.

The wild horses of Assateague Island National Seashore will be part of a series of U.S. Postal Service stamps celebrating the 100th anniversary of the National Park Service.

The park, which straddles the Virginia-Maryland border, is known for the horses that inhabit the island and the nearby Chincoteague National Wildlife Refuge. The horses are divided into two herds – one on the Virginia side of a fence marking the state border, the other on the Maryland side.

In summer, the Virginia horses are moved from the Chincoteague refuge to Assateague Island in the annual pony swim.

Tim Fitzharris of Fayetteville, Ark. took the photo used for the stamp, the Postal Service said.

The stamps will be issued June 2.

Source:  Richmond Times-Dispatch