I went to the Wolfsschlucht in Zwingenberg. The name "Wolfsschlucht" must be in English something like canyon of wolves. I went there with my friend ~PENTAXJUNKIE, it was a very dangerous trip to get there, no real paths, just nature, rocks, etc. With my tripod and photo bag it was very difficult not to fall. But it was worth the effort.
I took this picture here, testing my new ND400 filter. Because it was already clouded and through the leaves I took this photo 5 minutes (!). So hope you like this picture with my personal longest exposure!
UPDATE: I made some picture post editing to get better contrasts and make it all look stronger. Thanks to *MEgolddust for giving me inspiration and help for this here!
____________________________ Canon EOS 450D Sigma 10-20mm f/4-5.6 EX DC HSM ND400