Some photos I took in Joshua Tree NP while on a trip through the southwestern US with my trusty M6, 35 Summicron and a whole bunch of Kodak TriX. If I remeber correctly I think I also used an orange or yellow filter on these shots ....
More here: http://www.philippwortmann.com/southwestbw
or on flickr:
https://www.flickr.com/photos/derphilipppp/albums/72157651692347201