

Details
Most people know Mirjam Widmer, who was born in Zurich, by the name "Mü". Photography has accompanied her since her youth. The camera was always with her. This was also the case when she discovered her passion for caving in 2004.
On international trips and expeditions, Mirjam Widmer has expanded her photographic knowledge together with cave photographers from around the world. Over the years, she has developed her own style – “rich and refined, with a touch of feminine class” (Roberto Buzzini).
In 2026, she completed her diploma in Communication Design HF, specialising in Photography, at the Higher Technical School of Photography at Zentrum Bildung in Baden, Switzerland. The qualification is recognised as a Professional Bachelor. She received the “zB. best of” award for her final diploma result.
The image is created in the mind first: Nothing in a cave is permanently lit. The cave becomes bright for only about one thousandth of a second. To bring light into the darkness, the trained chemical laboratory technician works with up to six flashes at the same time, depending on the situation.
Through her photography, Mirjam Widmer makes the treasures of the underground world visible – its unique shapes and the interplay of light and shadow – even for people who do not explore caves themselves.
Awards
2nd place in the macro category at the 19th International Speleological Congress in Brazil.
BRAZIL 2025
1st Prize in the category “Women and Men of Science” at the SNSF Scientific Image Competition.
SWITZERLAND 2026
1st place in the macro category and 2nd place in the Action & Exploration category at the 18th International Speleological Congress in France.
FRANCE 2022
Various awards at the 14th Swiss Speleology Congress in the categories “Beauties of the Underworld,” “Macro,” “Karst,” “Action,” and winner of the audience award.
SWITZERLAND 2019