What is hidden in Rhode Island at the Mulder family summer vacation house in Quonochontaug in 'The X-Files'?

In "The X-Files" episode titled "Drive," the Mulder family summer vacation house in Quonochontaug, Rhode Island, is revealed to have hidden alien technology. This technology is linked to the broader conspiracy surrounding extraterrestrial life and government cover-ups. The discovery at the house ties into the show's ongoing themes of secrecy and the search for truth regarding alien encounters.