Nearly 600 passengers had to change trains in the middle of the Gotthard tunnel last night.
The train broke down in the tunnel and was stuck for two hours before it was decided to lead passengers along the side of the tunnel to a new train.
Swiss Federal Railways say the passengers were never in danger.
Services returned to normal at around 9.30pm. An investigation into the breakdown is now underway.
Heat kills more than the roads
Heat now kills more people in Switzerland than road accidents.
Geneva left with the bill after G7
Geneva cantonal minister Carole-Anne Kast says Bern gave in too easily to France over who pays for last month's G7 summit in Évian.
High wildfire risks increases further
The wildfire risk has climbed to the highest level so far, with Valais now under "very high danger" and open fires banned across several cantons.
HPV vaccines for all
Switzerland has become the first country in Europe to widen its HPV vaccine to everyone aged 9 to 45, including men up to 45.
Yverdon maps its heat island
With the Plateau facing 35 degrees on Thursday, Yverdon-les-Bains has installed 15 sensors to work out how hot its own streets really get.
Shaqiri meets hundreds of fans in Geneva
Hundreds of football fans packed Geneva's La Praille shopping centre yesterday to meet Swiss star Xherdan Shaqiri.
