The Horse Block is a sea stack of the Falkland Islands. It is situated off the southwest coast of Weddell Island, 1.8 km southwest of Pillar Bluff.
Sea stacks are particularly common along the west of the Falklands due to the tidal swell, and the erosive, battering action of the Falkland Current.
As the name implies, the conspicuous feature looks like a horse, with a tower at one end.
The Falkland Islands. Scale 1:401280 map. London: Edward Stanford, 1901
Falkland Islands Explorer Map. Scale 1:365000. Ocean Explorer Maps, 2007
Falklands Topographic Map Series. Scale 1:50000, 29 sheets. DOS 453, 1961-1979
Falkland Islands. Scale 1:643000 Map. DOS 906. Edition 3-OS, 1998
Map 500k--xm20-4. 1:500000 map of Weddell Island and part of West Falkland. Russian Army Maps (for the world)
Approaches to the Falkland Islands. Scale 1:1500000 chart. Gps Nautical Charts, 2010
Illustrated Map of Weddell Island