Ikazuchi Jinja in Oppama-honcho, Yokosuka, Kanagawa, is an ancient shrine enshrining the thunder deity Hono-Ikazuchi, long revered for protection against lightning and weather disasters. Its highlight is a great ginkgo sacred tree over 400 years old — chosen among the “50 Old and Notable Trees of Kamakura and the Miura Peninsula” — whose breast-like aerial roots (“milk ginkgo”) draw prayers for safe childbirth. Goshuin are offered for a 300-yen donation, sometimes hand-brushed by the priest. A five-minute walk from Keikyu Oppama Station, it pairs well with nearby Hofukuji, Shotenji, Seto Shrine, and Choshoji. Last updated: June 4, 2026.