The mountains dominate the west and north while the plains dominate around five km within the coastline. There are three towns along the Pacific Ocean: from northeast to southwest, Noboribetsu, Horobetsu and Washibetsu. These betsu are derived from "river" in the Ainu language. Noboribetsu is on the Noboribetsu River. Horobetsu and Washibetsu are on the Iburi-horobetsu River and the Washibetsu River respectively.
6 km inland from Noboribetsu City in the river valley is the smaller town of Noboribetsu-onsen (登別温泉, Noboribetsu hot-spring). The town has a range of onsen for bathing as well as other hot springs formed from different minerals for scenic viewing and is also known for its bear park. Noboribetsu-onsen is one of many well-known resorts in Japan, with many hotels and ryokan, and is the largest "hot spring town" in Hokkaido.