The treacherous mud flats have claimed at least three lives over the past 55 years and have led to multiple rescues. Planet One Images/Universal Images Group via Getty Images.

The Kwinana refinery alone has produced 138 million cubic metres of red mud stored in nine vast piles four kilometres inland, one 77 metres high, according to Alcoa’s tailings database.

Zachary Porter, a 20-year-old college student, was on a trip to Alaska when he got stuck in quicksand-like silt up to his waist and drowned when the tide came in before his friends could pull him out.

Authorities say a 20-year-old Illinois man died Sunday evening after rescuers were unable to free him from the Turnagain Arm mud flats near Hope and he drowned as the tide rose.

ANCHORAGE, Alaska — A man who was walking 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 ...

A man died in Alaska on Sunday after he got trapped waist-deep in tidal mud flats and was submerged by the incoming tide, state troopers said. Zachary Porter, 20, of Illinois, got stuck in the mud ...

The drowning was the latest tragedy at Turnagain Arm, a 48-mile-long estuary in Alaska known for its dangerous mud flats made of silt created by glacier-pulverized rocks.

The beautiful, yet deadly mud flats of Alaska's Turnagain Arm tragically claimed another victim this week, after a 20-year-old man became stuck waist deep and drowned with the incoming tide.