A wall hanging system is provided for mounting of heavy, high cantilever load objects to an upright wall, such as a big game trophy comprising a backer board with a central opening. The system includes a bracket secured to the rear face of backer board and having a forwardly extending housing. The housing includes an arcuate, inclined, hanging wall section defining a mounting recess. The system also has a hanger including an inclined, arcuate, upper, support surface, which is received within the recess such that the hanging and support surfaces are disposed in mating engagement throughout a fore-and-aft depth of at least about one-quarter inch, and through an arc of at least about 120°.