Thanks, Bjørn, you are very kind, but actually I feel like I am just starting out with long lenses and have a lot to learn. I often remember a remark you made in a post a few years back on *the other site* - to the effect that your most commonly-used focal length for winter landscapes was 300mm. That really made me think.
And Øivind - the light was very beautiful these past few days and - as you say - was very revealing of both large and small structures and details. I was in luck.