England, Dorset, Lyme Regis, People on the cob with fossil cliff behind.

Ireland, County Mayo, Downpatrick Head, Dun Briste or Broken Fort is an impressive sea stack at the headland.

Ireland, County Clare, Cliffs of Moher with O'Briens Tower.

China, Sichuan Province, Dazu, Boading. Tang dynasty Buddhist figures sculpted within overhanging cliff. .

Ireland, County Mayo, Erris Head, Erris Head Loop Walk, view of cliffs and sea.

Germany, Bavaria, Berchtesgaden, Giant Calvary scene on the Brine Line Cliff Walk above the town.

Germany, Bavaria, Berchtesgaden, Stiftskirche and Pfarrkirche St Andreas from the snow covered Brine Line Cliff Walk above the town.

USA, Utah, Moab, A young man slacklining or highlining hundreds of feet above Mineral Canyon during a highline gathering.

USA, Utah, Moab, Base jumpers prepare to jump from the Mothership Spacenet suspended from the cliffs 950 vertical feet above the valley floor at Mineral canyon. Another jumper rides the zipline from...

USA, Utah, Moab, A base Jumper leaps off the clifftop 950 feet above the floor of Mineral Canyon.

USA, Utah, Moab, A base Jumper leaps off the clifftop 950 feet above the floor of Mineral Canyon.

USA, Utah, Moab, A base Jumper jumps off the clifftop 950 feet above the floor of Mineral Canyon.