The Feet, Leg, &  Bone counts for 10 points of the 84* alloted for General Type. The massive appearance is of utmost importance to the breed. Without big, dense bone, it is difficult to capture the essence of mass.
The easiest way to determine the heaviness of bone in the Holland is to examine the front legs. They should be straight and strong looking. Appearing very thick and short for the size of the rabbit.
CJ's Cid
Checkmate's Oliver
HH's Mint
Gromley
RH's Sizzle
C's Binkyson
*Quote taken from the "Standard of Perfection" authored by the ARBA.