11. Similar to striations are chatter marks, lines of crescent-shape depressions in the rock underlying a glacier. 12. The asteroid's largest crater is 3.4 miles wide and sits opposite from a 6.2-mile-wide, saddle-shaped depression . 13. The other lakes on Gotland are very shallow, bowl-shaped depressions in the bedrock, filled with water. 14. Ina is a D-shaped depression 2.9?.9 km wide. 15. The caldera is a giant bowl-shaped depression , approximately wide, surrounded by mountains, but open to the southeast. 16. The crater rim is slightly elongated in the northeastern direction, and forms an egg-shaped depression in the surface. 17. The simplest type of impact crater is a smooth, bowl-shaped depression like the famous Baringer Crater in Arizona. 18. The crater floor is somewhat brighter than the exterior surface and is smooth with several irregularly shaped depressions . 19. Subsequently the term was transferred to the funnel-shaped depressions that formed at the surface above filled or collapsed mineshafts. 20. The crater constitutes a bowl-shaped depression overlain by glacial ice and volcanic debris that were deposited during volcanic activity.
