animal autumn brown deer leaf leaves mammal roe walk wild advice alert announcement appropriate-behavior appropriate-behaviour be-careful beware care careful caution communicating communication concrete cycling cyclists ground-level informing lookout observant path pedestrians risk risks safety share sharing sign signs track walkers walking warning watch watch-out white ecology fence field forest grass horse nature rural activity fog human outdoor people snow travel Trekking black business businesswoman career color energetic girl go shade shadow silhouette step woman women blue sky bushes clouds germany hills landscape lindlar meadow sunshine trees