Deep below a mountain town in southern Colorado, mineral-rich water travels upward from the world’s deepest measured geothermal hot spring, turning an ordinary dip into a front-row seat to geology in motion. The Mother Spring: Earth’s Deepest Geothermal Hot Spring Right at Your FeetMost people have never stood directly above the world’s deepest measured geothermal hot spring. The Springs Resort offers that option, but it also offers considerably more. The Springs Resort in Colorado offers bright rooms equipped with Wi-Fi and coffeemakers, while deluxe rooms and suites add kitchenettes with microwaves and minifridges. The Springs Resort in Colorado does not do that.