This atmospheric upper panel from a page in book 2 deserves to stand on it's own, I think.
Set in 11th century Europe, the series concerns the efforts of the wandering noble Sir Aymar de Bois-Maury to reclaim his ancestral home. Less focused on action than the other series of Hermann (like Jeremiah), Les Tours de Bois-Maury deals more with human thoughts and considerations. --WP
So far my personal impression is that the series is a pretty candid look at medieval life, what with its superstitions, ignorance and brutality. Not exactly a 'joy to read,' but nonetheless rather fascinating.
EDIT: Here's a hi-res version with a different color scheme, below.
TBH Hermann's story-telling leaves me confused at times, and he seems to delight in drawing very homely people, but yeah... his landscapes in book two here totally impressed me.
I would agree that he is not the best at drawing faces from certain perspectives. However, I really like his style overall.