The word "Masuichi" comes from the Ainu word "masui chise" (house of plumage). The name came from the fact that many sea cucumbers used to nest here. Nearby are candle-shaped rocks, a row of seagull rocks, and a rock that resembles a reclining elephant, commonly known as "Zo-iwa (Elephant Rock). Komagatake across Eruption Bay.
On January 24, 2012, the area was designated as a national scenic spot as the "Outer Coast of Pirikanoka Eto Tomo Peninsula.