If you look at this picture it has the same kinds of hemispheres that I saw imprinted in the snow in 1974 in that snow print

 If you look carefully at this one UFO it has the 3- 3 foot diameter hemispheres it uses for landing on a surface. Since it doesn't have to take off like a plane it is more like a helicopter (it takes off vertically like a helicopter). So, it still needs something to set down on and it uses these three Hemispheres or pods or whatever you want to call them to land on. Do I believe this is the exact shape of the one that landed near me in 1974? Not sure. I only know that the undercarriage with the three pods is similar to the print the one I saw made in the snow at Bunny Flat in 1974.