| Looking north from near the top of Grand Som, the highest peak in the
    Chartreuse Hills.  The grassy valley contains the soft shales of the core of the
    Corbel fold, with the bands of limestone at the head of this valley running over the crest
    of the fold.  The Subalpine chains stretch off to the right and distance.  The
    prominent wooded ridge leading into the distance from left of view is the crest of one of
    the Jura folds.  This divergence between the Jura and Subalps off to the north
    defines the margins of the hazy low ground - the Annecy basin. |