Every four years, curling interest sweeps (pun absolutely intended) through the U.S.
And this year, the buzz is as loud as ever -- even before the Opening Ceremony began.
Team USA is off to a red-hot start in the sport during the Milan Cortina Winter Olympics, carrying a 4-0 record into Saturday's action.
While curling finds its way to the forefront of American's minds, it's a good time to revisit a great fun fact about the sport:
Every single curling stone at the Winter Olympics comes from the exact same place -- a tiny island about 10 miles off the coast of Scotland.
Ailsa Craig spans only 240 acres and has a high-quality granite that works perfectly for creating curling stones. The body of the stone is made up from green granite from one side of the island while the blue granite used for the running surface comes from the opposite end of the island.
Why Ailsa Craig, though?
According to Olympics.com: "It is the molecular makeup of Ailsa Craig that makes it so uniquely suited to the sport of curling. No other destination in the world produces granite with the blend of heat and moisture resistance and hardy resilience than this small Scottish island."
Curling stones must weigh between 38 and 44 pounds and typically weigh 42 pounds -- which is equivalent to the weight of roughly 131 baseballs or 101 softballs.
In Olympic competition, one set of curling stones will have a red handle while the other set sports a yellow handle.
Bonus fun fact: Ailsa Craig translates to "fairy rock" in Gaelic.