Three days of partying are underway in the Swiss city of Basel as it celebrates its annual carnival, or Fasnacht.
Festivals to drive out the winter are common in Europe, but Basel's celebrations are unique in that they take place after the start of Lent (the 40-day fast in the Christian calendar that precedes Easter).
At 4am yesterday morning thousands gathered in the cold streets for Morgestraich, the first celebration of what locals call "die drey scheenschte Dääg" (the three most beautiful days).
Masked musicians belonging to so-called Cliques queue up in the dark with their drums and piccolos, waiting for the call to commence festivities. All shops and businesses turn off their lights and the street lights are extinguished.
Many of the Cliques have huge lanterns which are wheel-mounted or carried by up to four people - they also provide the only light in the streets.