TENINO, Thurston County — Lounging on an inflatable float on Lake Washington? Check. Hiking to an alpine lake for a swim? Check. Paddleboard rave on Lake Union? Check. Splashing around in a Cascades-fed river, cooling down in the Sound when the temp breaks 90 degrees, and snagging an entry at coveted public pools like West Seattle’s Colman Pool or Renton’s Henry Moses Aquatic Center? Check, check, check.

If your outdoor swimming bingo card is about full and you’re looking for a new place to take a dip before summer’s end, here’s an unlikely candidate: an old quarry-turned-municipal pool.

The aptly named Quarry Swimming Pool in Tenino, Thurston County, is a unique Washington freshwater swimming hole that also comes with amenities like lifeguards, bathrooms and seating. Plunging some 100 f

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