Blue Hole and the Arch, Dahab
A shore-entry reef sinkhole north of Dahab. The upper bowl and reef are dived recreationally; the Arch, a tunnel whose top lies at about 52-55 m, is described by dive centres as a technical dive only.
Divers enter from the shore, often via the Bells chimney to the north, and cross into the Blue Hole over a saddle at about 6-7 m. A Dahab dive centre advises recreational divers to stay within 30-40 m, depending on their certification.
The Arch, about 26 m long, opens from the hole to the open sea with its top at roughly 52-55 m. A Dahab dive centre states it is out of bounds for recreational divers and should only be dived as a planned technical decompression dive. The site is in the Abu Galum Protected Area, and a 2026 government plan proposes tighter regulation of marine activities and visitor numbers.
环境
Warm, clear sea water in a steep reef bowl over 100 m deep; the Arch is a short, deep overhead with open water and a deep drop-off beyond it.
仅供方位参考，不可用于导航。空心圆点为大致位置。
本页所有信息及其来源 (6)
| 信息条目 | 状态 | 来源 |
|---|---|---|
| The saddle connecting the hole to the outer reef is about 6-7 m deep. | 已报告 | [1] [2] |
| Recreational divers are advised to stay within 30-40 m depending on certification.Provider statement. | 已报告 | [1] |
| The top of the Arch is at roughly 52-55 m. | 来源存在冲突 | [1] [2] |
| The Arch should only be attempted by certified technical divers on a planned decompression dive with a qualified technical centre.Provider statement; no official rule text found. | 已报告 | [1] |
| The site lies in the Abu Galum Protected Area; a 2026 plan proposes regulating marine activities and capping visitor numbers. | 已报告 | [3] |
| Area-level coordinates for a widely published shore site. | 已报告 | [2] [1] |
已核实：来自我们直接查阅的官方或主要来源。已报告：仅来自二手来源。来源存在冲突：注释中列出两种版本。可能已过时：我们找到的最新来源已有一定年代。
由我们根据上述来源以自己的文字整理撰写。 提交更正