The Corossol structure has a maximum diameter of 4.3-kilometer (2.7 mi) and rises 25-meter (82 ft) above the surrounding sea floor. At its center, there is central uplift is 0.9–1-kilometer (0.56–0.62 mi) in diameter and rises to the same elevation as the crater rim to a depth of about 755-meter (2,477 ft) below the surface of the Gulf of St Lawrence. This uplift lies within a 2–2.4-kilometer (1.2–1.5 mi) in diameter and 185-meter (607 ft) deep circular central cavity.