Tim Fitzharris / Pyramid Mountain from Pyramid Lake, Jasper National Park, Alberta, Canada

Tim Fitzharris / Trident Range from Pyramid Lake, Jasper National Park, Alberta, Canada

Hougaard Malan / Drakensberg Escarpment, the pinnacles known as the pyramid and the column can be seen protruding from the mist. KwaZulu-Natal, South Africa. November 2012.

Olga Kamenskaya / Pyramidal ice fragment reflected on the surface of Lake Baikal. Ice fragment acting as a prism refracting light into rainbow. Siberia, Russia, March.

Pete Oxford / Salt mounds and evaporation ponds (sea salt production plant started in the 1600's and worked by african slaves) Cargill Solar Salt Works, Pekelmeer lagoon, Bonaire, Netherlands Antilles, Caribbean

Jeff Wilson / Pyramid of sea ice catching the first rays of the returning sun in the high Arctic, Svalbard, Spitsbergen, Norway, February 2009. Taken on location for the BBC series, Frozen Planet.

Jeff Wilson / Pyramid of sea ice catching the first rays of the returning sun in the high Arctic, Svalbard, Spitsbergen, Norway, February 2009. Taken on location for the BBC series, Frozen Planet.

Jeff Wilson / Pyramid of sea ice catching the first rays of the returning sun in the high Arctic, Svalbard, Spitsbergen, Norway, February 2009. Taken on location for the BBC series, Frozen Planet.

Nick Upton / Traditional organic hay meadow with a profusion of wild flowers and grasses including Pyramid orchid (Anacamptis pyramidalis) Common spotted orchid (Dactylorhiza fuchsii, Rough hawkbit (Leontodon hisp...

Gerry Ellis / Sandstone blocks of White Pyramid of King Snefru at Dakshur, Egypt

Gerry Ellis / The pyramids of Giza in evening light, Giza, Egypt

Georgette Douwma / Pyramid butterflyfish (Hemitaurichthys polylepis}. North Sulawesi, Indonesia.