Half Tree Hollow | |
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| Sovereign state | United Kingdom |
| Overseas territory | Saint Helena, Ascension and Tristan da Cunha |
| Island | Saint Helena |
| Status | District |
| Area | |
| • Total | 0.6 sq mi (1.6 km2) |
| Population (2021) | |
| • Total | 1,034 |
| • Density | 1,590/sq mi (615/km2) |
| Time zone | UTC+0 (GMT) |
Half Tree Hollow is the smallest by area of the eight districts of the island of Saint Helena, part of the British Overseas Territory of Saint Helena, Ascension and Tristan da Cunha in the South Atlantic Ocean. It is a suburb of Jamestown and is situated at the top of Ladder Hill, which forms the southern side of the James Valley, at the base of which sits Jamestown. The hill was fortified in the late 1700s, and Ladder Hill Fort was subsequently built. The village grew during the 1960s because the James Valley lacked any room for expansion.