warning sign on an old rail track in spring in the heath lueneburger heide, lower saxony

green tree track transport forest leaf woodland autumn flower plant grass garden nature railway vehicle trail train sunlight warning sign old rail spring heath lueneburger heide lower saxony benzen walsrode caution not enter danger life german germany lower saxony north northern street town typical town old walsrode lueneburger heide forest nature tree landscape trees green scenic wood europe heath european leaf color colorful heidekreis architecture forest historical stone blue sky sun lüneburger rail track road way bridge transport transportation sign traffic spring