Canada
One time QCA received a charter for Garibaldi Park. Three young hikers wanted to be taken into Garibaldi Lake with their packs and supplies. The weather report was marginal but Johnny Hatch decided he would try making the flight himself. All went well until he turned out of the valley and headed up toward the end of the lake. The end of the valley is blocked by an eight-hundred-foot-high lava 'dyke' that forms the lake, and he had to fly up over the barrier to land on the water.
Just as Johnny was approaching the barrier, a violent downdraft of cold glacial air hit the aircraft and caused it to lose several hundred feet of altitude. Since it was impossible to clear the barrier, Johnny took the only course left to him. He chopped the throttle, shut off the ignition, and aimed straight for two medium-sized, springy-looking fir trees. The aircraft, now at stall speed, struck the trees forty-five feet above ground, pushed them over to a forty-five degree angle, then slid down the trunks like an elevator and made a reasonably soft landing.
Quite a few things happened to the aircraft during the process. Both wings sheared off. The pontoons doubled back under the fuselage like pretzels and the engine came off its mount. Gasoline was everywhere. When the broken branches and glass and bits of aircraft stopped falling, Johnny looked around to see how his passengers made out. Before he could think what to say, one of them turned from the window and exclaimed, "Oh, isn't this absolutely bee-yootiful!" None of them had ever been in an aircraft before and they had nothing with which to compare this uncommon performance. They seemed to assume that this was just the normal way you landed your floatplane on a mountain.