Mt. Coronet

Mount Coronet [ a ], formatted as Mt. Coronet prior to Pokémon Brilliant Diamond and Shining Pearl, is the highest mountain in the Sinnoh region, part of a long mountain range that divides the region in half. Most of it is a deep cave, though there are several above-ground areas in which it snows constantly. The cave that winds through the mountain is apparently man-made, as bridges run through it; though the higher one climbs, the more rugged it becomes. As a centerpiece of the region, the cave connects Oreburgh City, Eterna City, Hearthome City, Celestic Town, and Snowpoint City via Routes 207, 208, 211, 216, and 217. To fully navigate the mountain's caves, Surf, Strength, Defog, Rock Smash, Rock Climb, and Waterfall are required.