The project partners will be the foresters of Jena and a local environment organisation, the "Fuchsturmgesellschaft" . The Jena Forest nature reservation is close to the city of Jena, in the federal state of Thüringen - the "green heart of Germany" - and is an important refuge for various bat species, endangered bird species, and insects that are native to the forest. Jena with about 100.000 inhabitants, is the 2nd biggest city in Thüringen and is situated on the banks of the river Saale, surrounded by white and grey calcite mountains in the eastern part of Thüringen. Jena is famous for the high-tech Zeiss Optical Instruments, the Schiller University and the Zeiss-Planetarium, which is the oldest continuously operating planetarium in the world.