蓝洞
Great Blue Hole
A protected marine sinkhole on Lighthouse Reef where divers descend the wall to overhangs hung with ice-age stalactites. Visits are by boat with tour operators, and a daily monument fee applies.
Dive boats tie up to mooring buoys on the rim of the hole, which has no land. Divers follow the steep wall down to overhanging shelves where large stalactites hang, evidence that this was a dry cave when sea level was far lower.
The Belize Audubon Society, which publishes the monument's visitor information, lists diving, snorkelling and wildlife viewing; snorkelling takes place on the coral rim. Sharks and turtles are reported in the area.
环境
Vertical walls and overhanging ledges with stalactites in clear marine water; deep anoxic water with hydrogen sulfide below about 90 m.
环境条件
Open marine site; trips are long boat rides from the cayes and mainland. Hydrogen sulfide and no oxygen below about 90 m (2018 survey).
典型范围来自已发表资料，不代表当前实际状况。
设施
No land or visitor facilities at the hole; mooring buoys for dive boats. Half Moon Caye, often visited the same day, has basic visitor facilities.
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 (9)
| 信息条目 | 状态 | 来源 |
|---|---|---|
| One operator lists a maximum depth of 40 m (135 ft) for its Blue Hole dive.Provider claim. | 已报告 | [2] |
| The sinkhole is about 412 ft (125 m) deep. | 已核实 | [1] |
| A hydrogen sulfide layer at about 290 ft marks the start of oxygen-free water.December 2018 expedition. | 已报告 | [3] |
| One operator lists its 40 m Blue Hole depth for advanced-certified divers and requires Blue Hole divers to be at least 18.Provider claim. | 已报告 | [2] |
| Non-nationals pay BZD 60 per day to enter the monument.Checked 2026-10-14. | 已核实 | [1] |
| The monument lists hours of 8:00 am to 4:30 pm. | 已核实 | [1] |
| Mariners must contact Half Moon Caye park rangers (VHF 16) before mooring or anchoring. | 已核实 | [1] |
| There are no land or visitor facilities at the hole, only mooring buoys. | 已核实 | [1] |
| GeoNames lists the Great Blue Hole at 17.315278, -87.53444.Public, widely published site. | 已报告 | [4] |
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