What happened
A commercial certificated pilot departed on the first portion of a cargo flight after obtaining a Special VFR clearance. At the time of departure, the airport weather reported visibility of 2 1/2 miles in light snow. Following takeoff, the pilot observed that the sky conditions were deteriorating, becoming more obscured and indefinite.
Due to the worsening weather, the pilot decided to return to the airport and obtained a second Special VFR clearance for the return. The pilot was cleared to land on a runway that lacked a visual approach slope indicator (VASI). During the landing approach, the pilot reported being able to see the approach end of the runway, but noted that the lighting conditions were very flat.
While on final approach, the airplane collided with snow-covered terrain approximately 25 yards short of the runway approach end. The impact resulted in no fatalities, but the aircraft sustained significant damage, including the landing gear being sheared off, along with damage to the engine cowling, belly structure, and wing spars.