McDowell Sonoran Conservancy: Tom’s Thumb Trail.

Located in the McDowell Mountains in the upper Sonoran Desert, right outside of Scottsdale, Arizona, sits the McDowell Sonoran Conservancy; an independent, nonprofit conservation. Created in 1991, it’s a massive area of around 30,580-acres, making it the largest urban preserve in the entire United States. The conservancy was birthed in 1990 by 13 preservationists and …

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