A peculiar phenomenon known as ice pancakes has been spotted recently on the River Bladnoch in Scotland's Galloway region.
A video and several photos uploaded on social media by the Scottish Invasive Species Initiative (SISI) show nearly perfect ice circles floating on the river’s surface.
Callum Sinclair, SISI project manager and the man who captured the phenomenon in question on camera, told one media outlet that, while he has seen “ice pancakes” before, these were “particularly interesting” due to their perfect shape.
Pancake ice usually forms in cold sea water when waves cause pieces of ice to knock against each another, thus rounding their edges.
However, such “pancakes” may also form on rivers as well when frozen foam gets sucked into a swirling current of water known as an eddy.