You think it's a bit nippy in the UK at the moment? You've seen nothing.
Amos Chapple is a photographer from New Zealand.
In 2013 and 2014 he travelled to the coldest inhabited areas in the world, to Yaktusk and Oymyakon in Russia.
Temperatures in these regions regularly dip to -50 degrees celsius.
In Oymyakon, where roughly 500 residents live, 'cold' has a bit of a different meaning, as these images documented by Chapple show:
A toilet on the tundra at a petrol stop on the road to Oymyakon
A frost-encrusted house in the city centre of Yakutsk
A statue of Ivan Kraft, one of the first governors of Yakutia
A local woman enters Preobrazhensky Cathedral in a swirl of freezing mist
Omyakon's only shop
Summer shoes waiting out the winter in a shed in the suburbs of Yakutsk
A woman in the city centre of Yakutsk
A man leaves his van and walks into Omyakon's only shop as paper waste is burnt in a 40 gallon drum
Cows walk back to their sheds after watering in the thermal spring in Oymyakon
A woman walks over an ice-encrusted bridge in Yakutsk
A young student poses for a portrait at a bus station in Yakutsk