The building on Tor Island in Lochore was set on fire on Monday.
It was the latest incident of vandalism at the site.
The Outdoor Education team said they encountered increasing issues of ‘irresponsible behaviour’ which culminated in the building burning down.
He said they were “disappointed and sad” – and would look for ways to rebuild the rotunda.
Bus Fife: Stagecoach ‘working around the clock’ to cope with staff shortages
Writing on their Facebook page, the team said: ‘The Rotunda was built by the Outdoor Education team and local volunteers many years ago and is an integral part of our outdoor learning activities air that we offer, including bushcraft and teambuilding sessions and used by thousands of young people over the years.
“Unfortunately we have had increasingly irresponsible behavior over the past two years with people accessing the island and vandalizing our camp set up including burning down our log store and kitchen and defecating around it. of camp.
“We are disappointed and sad that this has now happened”
He said he would take stock after his busy summer period and see if he could be replaced.
“We will find a way to rebuild it so that future generations of young people who pass through the center can experience the quality outdoor learning activities that we strive to provide at Outdoor Education Fife,” he added. .
The center offers a wide range of activities for all ages and abilities that allow people to get out and explore the local community and beyond.