Meet up: 11:00AM at station S Savignyplatz (S7), platform 4 (Richtung S Potsdam Hauptbahnhof) with a valid ticket for Berlin public transport.
Departure: at 11:05AM by S7 to Grunewald (arrival 11:12AM).
 We will walk through a forest to a famous nice lake Teufelssee. You can be naked there or in swimsuit - everything works well there :)
Return back: by S7 from S Grunewald to S Ostkreuz Bhf, operates in 10 minutes interval.
Path: ~4km there and back, slightly challenging, paved and unpaved roads, forest terrain, hilly terrain
Please bring enough drinking water for hot weather and an appropriate snack, a towel/blanket, good shoes or outdoor sandals.