The Mayak Swamp was a location on the planet Ferenginar which was the deepest, murkiest, filthiest and most garbage filled swamp on the entire world with direct exposure to its toxic swamp waters guaranteeing an early grave.

In 2376, Eliminator Leck swam through the muck of the Mayak Swamp whilst he was infiltrating the Glat Archive. (DS9 novel: Ferenginar: Satisfaction is Not Guaranteed)

Rebecca Emmanuelli had visited Ferenginar's Mayak Swamp prior to 2380. (ST novel: Articles of the Federation)

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