PROSPECT — A crew from the SyFy network’s “Ghost Hunters” program will be filming an upcoming episode at Fort Knox State Historic Site in February.

Officials with the Maine Bureau of Parks and Land said they were contacted by the show, asking permission to spend six days at the fort looking for “ectoplasmic apparitions” – ghosts. The fort is closed to the public during winter.

In “Ghost Hunters,” two paranormal investigators from Rhode Island travel the country trying to find proof of hauntings in various places. Fort Knox, built mostly underground and with lots of dark tunnels, has long been considered a spooky place by locals and visitors alike. The fort dates from the 1840s.

SyFy did not say when the Fort Knox episode would air. The series normally airs Wednesdays at 9 p.m.