We slumped down in front of Tequila Rock, an imposing block of argillaceous sandstone.

FORBES: Paradise Lost

Many of the quakes in the UK are clustered around an enormous block of rock known as the Midlands Microcraton.

BBC: Q&A: UK's small-scale earthquakes

But the residents of Kemptown, which overlooks Black Rock, are concerned the chosen development will block their view of the sea.

BBC: NEWS | UK | England | Southern Counties | Seafront plan for ice rinks approved

These three mild suburban guys strike it rich only after Rock assumes the identity of a jailed racketeer and dubs his group CB4 (for Cell Block Four).

NEWYORKER: CB4

Some of the rock face is owned by the Downs Committee, another section by residents in a nearby block of flats and and the land below by another private owner.

BBC: Portway damage risk prompts Avon Gorge rockfall repairs

The result, in a mountain range characterised by soft, crumbling rock which desperately needs strong roots to hold it together, has been an increasing number of landslides, which block roads, railways and even rivers.

ECONOMIST: From the archive