A channel flows through the mud flats along the Seward Highway and Turnagain Arm in Alaska on Oct. 25, 2014. Authorities said, a 20-year-old man from Illinois who was walking Sunday evening, May 21, 2023, on tidal mud flats with friends in an Alaska estuary, got stuck up to his waist in the quicksand-like silt and drowned as the tide came in before frantic rescuers could extract him. (Bob Hallinen/Anchorage Daily News via AP)