Some years ago, was working at a steel mill in Puerto Ordaz, Venezuela. At the weekend, got a flight up to the Angel Falls (the 1 km freefall that they base jump off) in an ancient DC-3.
To see the Angel Falls, the DC-3 enters a huge horse-shoe shaped mountain valley - it's unable to climb out over the sides, so once you enter you truly are commited to fly a constant banking turn to exit.
Anyway, there you are rattling along with the rock face maybe 100-150' from the wing-tip when....... YOU GO INTO CLOUD!!!!! The only thing I could think was that there was a sheer cliff about 0.003 of a second away from us. That and the US co-pilot's pre-flight comment that 'that rock face doesn't move for anybody!' The Capt. was more reassuring - at about 80-years old he looked like he'd flown it a few times. We made it of course. But those 5 seconds in the cloud felt more like 5 minutes....
And no, I forgot to take a bloody photo!!!