In northern Minnesota, a waterfall splits in two. One half tumbles over the edge and continues down the river, the other half drops into a huge hole in the rock and disappears.&nbsp;<hr><p style='color:grey; font-size:0.75em;'> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.</p>