This small stone cairn caught my eye, perched in the middle of a mostly dry Sabino Creek.
The creek corridor is full of ash, cottonwood, willow, sycamore, and other riparian species. When the creek is running — as a result of snow melt and rainwater flowing down from the Catalina Mountains — Tucson’s underground aquifer is re-charged.
Sabino Creek also feeds the Rillito River, which feeds the Santa Cruz River, which feeds the Gila River, which feeds the mighty Colorado River, which in turn feeds the Sea of Cortez (or Gulf of California).
The hydrologic cycle comes full circle when this water returns to Tucson in the form of summer monsoons and winter rains, and flows down Tucson’s Sabino Canyon once again — a wondrous ebb and flow 10 million years in the making.