The large dump truck had gotten stuck in the snow!! The little bobcat was ramming its scoop into the truck, trying to propel it forward I guess. But the wheels of the dump truck just kept spinning and the bobcat wasn't heavy enough to push the dump truck. Next they tried scooping SNOW under the tires. (I was really laughing at that!) They must have thought they'd get some traction from the snow. When that didn't work they brought in another little bobcat-type thing. They hooked a chain from the first bobcat to the dump truck and tried to pull the truck out. Eventually they coordinated their movements so the first bobcat pulled while the second bobcat rammed the dump truck. That worked and they got out. It was pretty entertaining.
After the trucks and bobcats left I let the kids go out to play on the mountain. Thankfully I snapped these pictures: