Crossing the Siskiyous, the 'highest point on I-5' at 4319 feet.
Rapid incline, slope at 6 percent over a few miles. You do the math.
My ears did it for me: clog, pop, clog.
The most effective way of clearing my (Eustachian) tubes: underslinging the jaw, and rapidly, in short chopping rises, reenact a pseudo-evolutionary transformation of myself from ape to man.
Children of the height, what music they make.