Stunning images captured by photographer Thomas Senf as climber Stephan Siegrist , winter , scaled frozen waterfall . The Voringsfossen fall is liquid for most of the year , but in 43 freezes into a 500ft cliff favoured by climbers . Hundreds of adventurers attempt the climb by day , but very few attempt the ascent at night , as pictured here .
Stunning images captured by photographer Thomas Senf as climber Stephan Siegrist , 43 , scaled frozen waterfall . The Voringsfossen fall is liquid for most of the year , but in winter freezes into a 500ft cliff favoured by climbers . Hundreds of adventurers attempt the climb by day , but very few attempt the ascent at night , as pictured here .