Farmer Bruce Lilienthal routinely pulls up rocks from his fields in Arlington, Minn., but recently he made an unusual discovery.
"I don't know what I was thinking. I said, 'this is an odd rock,'" Lillienthal laughed in a KSTP report.
Confirmed by the University of Minnesota, the 33-pound hunk of metal found sticking out of the ground turned out to be a meteorite--the "trophy walleye" of Minnesota meteorites, according to the television station.
The university expert said that another meteorite was found just three miles away from the Lilienthal's farm about 120 years ago, but there's no way of telling when the 33-pounder made landfall. It's also unclear where it came from.
A slice of a meteorite that originated on Mars and was discovered in Morocco's Sahara Desert last year sold for $27,500 at an auction earlier this month. Space.com reports the rest of the rock was recently bought by a museum.
Martian meteorites are extremely rare, less than 300 pounds are known to exist on Earth and tend to fetch higher prices than other meteorites.