The Mont-Blanc glaciers, just over an hour from Geneva, are melting a month ahead of schedule after a low-snow winter and June's record heatwave.
The Chamonix Guides president Olivier Greber says he has never seen the mountains this dry in early July.
High-altitude guides are already facing fewer viable routes, with rockfalls multiplying and the freezing level climbing past 4,000 metres.
Borrowing costs increase
Switzerland is being pulled into a global surge in borrowing costs
Majority reluctant to give up cars
Only 6% of Swiss residents say they would be willing to sell their car to fight climate change
Wide variation in property valuations
Swiss homeowners are being warned that the same property can be valued by two different brokers with a gap of up to CHF 180,000
VAT increase on pensions being considered
Switzerland will decide on 29 November whether to raise VAT to pay for the 13th state pension
Second language debate
Switzerland is deeply divided over whether to make a second national language compulsory in primary schools nationwide
Lake Geneva steamships at risk
A majority of National Councillors want the Confederation to step in to rescue Lake Geneva's historic steamships
