Lake Ashi (芦ノ湖, Ashi-no-ko), s come from the volcanic eruption of the Hakone volcano. In the prehistoric world. The lake is about 19 kilometers long on a clear day. Visitors can admire the scenery of Mount Fuji from the other side of the lake in the Hakone Port area and Hakone harbor. The best views of the lake in combination with Mount Fuji can be enjoyed from Moto-Hakone (a few steps south from the sightseeing boat pier), from the Hakone Detached Palace Garden and from the sightseeing boats cruising the lake.
Two companies, Hakone Sightseeing Boats and Izuhakone Sightseeing Boats, operate boats between Moto-Hakone and Hakone-machi at the lake’s southern shores and Togendai and Kojiri at the lake’s northern end. A boat cruise from one end of the lake to the other takes roughly 30 minutes and costs 1050 yen. The Hakone Free Pass is valid on the pirate ship shaped Hakone Sightseeing Boats but not on boats operated by Izuhakone.