Alcatraz Island

Alcatraz Island, commonly called Alcatraz, is a small island in San Francisco Bay near the Golden Gate Strait. Developed in the mid‑19th century with a lighthouse, coastal fortifications, and a military prison, it was converted into Alcatraz Federal Penitentiary in 1934 and operated as a high‑security federal prison until its closure on March 21, 1963. The site's notoriety as an inescapable prison is tied in sources to strong tidal currents and cold surrounding waters. In 1969 an intertribal group of students and activists occupied the island for over 16 months as part of the Red Power Movement; that occupation, led in part by Richard Oakes, is commemorated by ongoing Indigenous observances such as a Thanksgiving Day sunrise ceremony. Since closure the island has become a major tourist attraction receiving large annual visitation and is represented in public‑domain visual records. Contemporary maritime incidents in the surrounding waters (reported in news sources) demonstrate ongoing activity in the bay around the island. Reported paranormal phenomena are not present in the provided research sources. The supplied materials focus on the island's historical, cultural, and geographic significance and do not document apparitions, hauntings, named spirits, or investigative claims. Accordingly, this entry does not assert any supernatural events beyond what is found in the cited sources.