Griswold Scout Reservation is a Scouting Reservation located near Gilmanton Iron Works. There are two summer camps located within it: Hidden Valley Scout Camp and Camp Bell.

Covering over 3,500 acres (1,400 ha) of forest, lakes, and mountains, the Scout Reservation was first run by the Norumbega Council. In 1971, the Daniel Webster Council acquired what was then called the Hidden Valley Scout Reservation. In 2000, the camp acquired additional land, which it named Camp Bell, and the total reservation was renamed Griswold Hidden Valley Scout Reservation.