I have flown in helicopters most of my career, and we regularly did auto-rotation emergency drills, where we cut the engines output back (to simulate dual engine failure) and then “glide” to a particular spot, using the air pressure from descent to drive the blades.
With a good pilot, you just kind of go zero-g for a second or two, and the. A somehwat faster than normal descent, followed by a big flare (tail down, nose up, like a diving bird pulling back and fanning its wings out) at around 80 feet, then quick (less comfortable) drop to the deck.
With a good pilot, it’s mildly uncomfortable, with a mediocre pilot, it’s some back pain and some extra maintenance inspections, but you aren’t crashing.






Our pilots, with training, regularly can get to inside a circle patch of flat land 100 ft in diameter. They generally pick a very specific spot on the runway (like the numbers) and then aim to end up there. And they practice straight down, 90 degree left, 90 degree right* 180 degree, and on occasion 360 degree (for when the spot you want is directly below when your engines fail, and feels like you are corkscrewing to your doom). Obviously practice is different than an actual emergency, but I felt confident the pilots could get us down safely in the event of a dual engine failure.
So honestly if it’s over mountainous areas, I’d rather be in the helicopter looking for a place to hard land than a fixed wing aircraft (that needs a runway or at the very least a long grassy field with no obstructions).