外后门岛
30°35′N 122°06′E
30°35′N 122°06′E
Chart
Nearest islands
- 大洋山岛2.5 km
- Lesser Yangshan Island4.2 km
- 4.7 km
- Qushan Island29 km
- Daishan Dao35 km
- Xiaochangtu Shan40 km
Also in Zhoushan Archipelago

Zhoushan Island
513 km²▲ 495 m
Major islands

Daishan Dao
110 km²▲ 255 m
Major islands

Zhujiajian Island
68.2 km²▲ 375 m
Major islands
Qushan Island
65.2 km²▲ 314 m
Major islands
Taohua Island
40.8 km²▲ 540 m
Minor islands
Xiushan Dao
23.5 km²▲ 204 m
Minor islands
Dengbu Island
14.6 km²▲ 181 m
Minor islands
Xiaochangtu Shan
13.3 km²▲ 296 m
Minor islands
Also in Qiqu Liedao
Lesser Yangshan Island
22.9 km²▲ 134 m
Minor islands
大洋山岛
5.8 km²▲ 205 m
Minor islands
Unnamed island
0.14 km²▲ 6 m
Minor islands
Sources
Facts
- Geometry, areas and high points: OpenStreetMap contributors (ODbL), Copernicus GLO-30, via Talus.
- Talus