For this Hudson River landscape, I used a technique that Bruce Waldman (check out Amie Roman's great post on Bruce over at Burnishings) showed me that involves drawing with a litho crayon directly onto the plate (without a ground coating). The plate is then open bit and the image comes through the texture of the crayon's marks.
As I've said before, I love the freedom and freshness of the mark that comes from using a litho crayon. It is conducive to creating bold and loosely drawn images that have been traditionally uncharactistic of etching printmaking. I find it especially useful when drawing landscapes where the subjects don't require too much detail and can benefit from the "life" of the line.