There's a giant hole that's draining a lake on the border of Oklahoma and Texas like it's a bathtub

Like something straight out of "The Twilight Zone", a swirling vortex has opened up in a giant lake on the border of Oklahoma and Texas. The gaping hole - which appeared recently in Lake Texoma - alarmed everyone from Twitter users to the Tulsa District US Army Corps of Engineers, who posted a YouTube video of the vortex. Below the video, they describe the hole as being "8 feet in diameter and capable of sucking in a full-sized boat." But despite how crazy it looks, there's a perfectly normal explanation for the spooky hole: The water is being drained. "Just like in your house when you fill a bathtub full of water and the drain, it will develop a vortex or whirlpool," BJ Parkey, assistant lake manager at Lake Texoma, told Business Insider. One of the largest reservoirs in the US, Lake Texoma lies on the border of Oklahoma and Texas and is formed by the buildup of water at Denison Dam on the Red River. When the water levels get too high, as they have in recent weeks, the Army Corps opens sluices, called floodgates, at the bottom of the lake to drain the water into the river. The flowing water creates cyclonic action, much like a tornado, which is widest at the top and tapers down at its tip, said Parkey.