The annual Sonnwendfeier in Oensingen, Solothurn, has sparked intense debate after the event on March 21 resulted in several small fires. The fireworks display, recognized as the largest in Switzerland, takes place within a nature reserve, leading to significant environmental concerns.
Emergency Response and Fire Hazards
Firefighters reported that the outbreaks were “bottom fires,” which were exacerbated by dry weather conditions and the Bise wind. Approximately 160 firefighters were deployed to manage the situation, utilizing six tank trucks and five motor pumps.
The extinguishing operations continued until 2:00 AM. During the effort, one firefighter sustained a foot injury in difficult terrain and required evacuation via a Rega helicopter.
Petition for Drastic Reductions
In response to the fires and the impact on the local ecosystem, a petition has been launched. The proposal demands that the duration of the fireworks be slashed from approximately one hour to just 16 minutes.
the petition calls for the event to be relocated from the nature reserve to the school grounds. Supporters argue that the fireworks occur during the critical breeding and setting season for wild animals.
Alexandra Horsch, President of the Greens Thal Gäu, told TeleM1 that the spring season is vital for wildlife, making animals particularly susceptible to disturbances.
Tradition Versus Modernity
The organizing committee has partially rejected the criticism. OK President Thomas Bader stated to TeleM1 that reducing each of the two participating clubs to eight minutes would not do justice to the centuries-old tradition.
Bader further expressed concern that a significantly shortened event could lead to a decline in attendance. He maintains that the current scale is essential to the spectacle’s appeal.
Public opinion remains divided. Some social media users describe the event as no longer contemporary, while others defend it as a vital contribution to collective memory, identity, and a sense of belonging within the Canton of Solothurn.
Potential Future Developments
The future of the Sonnwendfeier may depend on the outcome of the petition and subsequent negotiations between the organizing committee and local authorities. A compromise regarding the location or the duration of the display could be reached to mitigate fire risks.
Depending on the level of support for the petition, the event could potentially be moved to a non-protected area, such as the suggested school grounds or a sports field, to ensure the safety of the nature reserve.
Frequently Asked Questions
What are the primary demands of the petition?
The petition demands that the fireworks duration be reduced from around one hour to 16 minutes and that the event be moved from the nature reserve to the school grounds.

What caused the fires during the event?
The fires were “bottom fires” caused by the fireworks and were fueled by dry conditions and the Bise wind.
How many emergency personnel were involved?
Roughly 160 firefighters were deployed, supported by six tank trucks and five motor pumps.
Do you believe centuries-old traditions should be modified to protect local wildlife?
