Eboshi-iwa is the common name of Uba Shima, located off Chigasaki beach. Kanagawa prefecture. The name was the highest-ranked favorite supported by citizens through a questionnaire. The Space Summit in Chigasaki selected the name on 2008 Aug. 9.
Discovered on 2-10-1994 in Kitami by Endate, K., Watanabe, K.