Gale is a crater, and probable dry lake, at 5.4°S 137.8°E in the northwestern part of the Aeolis quadrangle on Mars. It is 154 km in diameter and estimated to be about 3.5–3.8 billion years old. From Wikipedia
Curiosity and Perseverance uncover evidence of past carbon sequestration and diverse aqueous environments, shedding light on Mars' transition from habitable to barren.