Fort William Mountain, Scotland
Mountain guide Mike Pescod walks at Nevis Range Mountain Experience, near Fort William during the launch of the Fort William Mountain Festival 2013.
Travellers cling on to an overcrowded train in Cairo.
A group of Crested Macaques, more used to tropical rainforests in Indonesia, huddle for warmth in Dublin Zoo.
Hindu priests hold oil lamps as they perform evening prayers on the banks of the river Ganges during the "Kumbh Mela", or Pitcher Festival, in the Indian city of Allahabad. The festival will return to Allahabad in 12 years time.
North Yorkshire, England
A sub-zero sunrise over Castle Howard, the stately home made famous in Brideshead Revisited. The lake in front of the castle is almost completely frozen over as the winter weather continues.
An Afghan man walks down a ladder during his exercise on top of a hill in Kabul.
A controlled aggression exercise with a military working dog in California. The exercises were conducted to train the dogs in subduing non-compliant suspects.