Judi relaxes on a spike! : 無料・フリー素材/写真
Judi relaxes on a spike! / wallygrom
| ライセンス | クリエイティブ・コモンズ 表示-継承 2.1 |
|---|---|
| 説明 | Ankarana National Reserve, near Antsiranana, northern Madagascar.Ankarana Special Reserve is a protected area in northern Madagascar created in 1956. It is a small, partially vegetated plateau composed of 150-million-year-old middle Jurassic limestone. With an average annual rainfall of about 2,000 millimetres (79 in), the underlying rocks have been eroded to produce caves and feed subterranean rivers - a karst topography. The rugged relief and the dense vegetation have helped protect the region from human intrusion and exploitation.Tsingy is the Malagasy name for the country's dramatic limestone karst rock formations, appearing like a forest of often razor-sharp shards. Limestone itself is a sedimentary rock, formed at the bottom of the sea both by evaporation and deposition of the calcium carbonate remains of billions of sea creatures, whose shells and bones in death fell to the ocean floor. Over millions of years, layers built upon layers, until seismic activity eventually thrust the limestone above sea level.What began as limestone plateaus eroded dramatically over time, weathered from above and below by fresh water acidified by airborne carbon dioxide dissolved within it.Tsingy is a Malagasy word meaning 'where one cannot walk barefoot'. This description is both apt and very important for ecosystems which have developed in these rock forms. Pockets of forest provide important habitat for wildlife and plants, which through the defence of sharp rock edges, are spared being plundered by bushmeat hunters, farmers and grazing zebu cattle. |
| 撮影日 | 2000-11-01 00:00:03 |
| 撮影者 | wallygrom |
| タグ | |
| 撮影地 | Antsiranana, Madagascar 地図 |