Boiling mud Hells Gate geothermal reserve Tikitere Rotorua North

by Mark Boulton

Closeup of boiling mud Hells Gate geothermal reserve Tikitere Rotorua North Island New Zealand

Huka Falls on Waikato rive near Taupo North Island New Zealand

by Mark Boulton

Huka Falls on Waikato river near Taupo North Island New Zealand. Of great important for electricity generation it supplies 8 hydroelectric schemes and water for cooling for 2 geothermal units. The average daily flow is 160 cub metres per second.

Himalayan Mountain Range, Pokhara, Nepal

by Mark Boulton

Himalayan Mountain Range Pokhara Nepal

Mountain walkers in Himalayas, Nepal

by Mark Boulton

Backpackers trekking in Langtang Valley in Himalayn mountains at around 15,000ft Kingdom of Nepal

Haast River running through gorge at Gate of Haast South Island

by Mark Boulton

Haast River running through gorge at Gates of Haast South Island New Zealand

Rain sky over Loch Etive, Glen Etive, Glencoe, Scotland

by Mark Boulton

Storm breaking over Loch Etive, Glen Etive Glencoe, Scotland

Two elephants crossing Luangwa River

by Mark Boulton

Dead tree, Cotswold Escarpment, UK

by Mark Boulton

Dead tree in sloping field Cotswold Escarpment below Cleeve Hill Southam, near Cheltenham, UK

Daffodils in full bloom on roadside verge Cotswolds UK

by Mark Boulton

Daffodils in full bloom on roadside verge Woodmancote Cotswolds UK

Cumulonimbus clouds Cotswolds UK

by Mark Boulton

Cumulonimbus clouds threatening rain and thunder, Cotswolds UK

Campaigners Stop Global Warming banner Climate Change March Dec

by Mark Boulton

Campaigners Stop Global Warming banner Climate Change March Dec 2007 London UK

Wispy cirrus clouds floating in blue sky Scotland

by Mark Boulton

Wispy cirrus clouds floating in blue sky Scotland

Piece of fossilised tree trunk in exposed rocks on beach Curio B

by Mark Boulton

Piece of fossilised tree trunk in exposed rocks on beach of Curio Bay site of fossil forest in the Catlins coast south-eastern Southland New Zealand. The fossilised trees date back to the middle Jurassic and are found mainly in green sandstone where the wood has been replaced by …

Bird watcher on way to Bass Rock, North Berwick Scotland

by Mark Boulton

Bird watcherlooking through binoculars in boat on way to Bass Rock to watch gannets North Berwick Scotland

Hawthorn tree bent by wind, UK

by Mark Boulton

Hawthorn tree Bent by prevailing wind Near Golden Cap Seaton, Dorset, UK

Old Scots pine bent by prevailing wind, Berwick, Scotland

by Mark Boulton

Old Scots pine tree bent by prevailing wind North Berwick, Scotland

Fresh fish in ice Auckland Fish Market New Zealand

by Mark Boulton

Fresh fish in ice Auckland Fish Market New Zealand

Northern highland on Arran viewed from beach Brodick Scotland UK

by Mark Boulton

Northern highlands on Arran viewed from beach Brodick Isle of Arran Scotland UK