Nice. Finding buried treasure under your own floor. According to the Daily Telegraph, a couple in Plymouth, Devon, always felt their sofa dipping in their living room floor. When Colin Steer investigated 25 years ago, he found a hole but his wife asked him to cover it up because she worried about the kids. Now that the kids have long ago moved out and the Steers are retired, it was time to investigate.
The well is 30 inches wide and 33 feet deep. It is from the 16th century and he's pulled out an old sword. From the Telegraph:
"It was hidden at a 45 degree angle and sort of just fell out. It looks like an old peasant's fighting weapon because it appears to be made up of bits of metal all knocked together," said Steer.
According to Mr Steer’s research, the land on which his house in Mannamead Road now stands was woodland until 1895, with Drake’s leat running through it.
The watercourse was built in the 16th century by Sir Francis Drake to carry water from Dartmoor to Plymouth.
The only thing I've ever found under a house is a dead raccoon. Mr. Steer's story can be found here.