Look at the stripe across the trail, a little above center in this pic:
illusion

That’s water flowing from the hill across the trail. From this vantage point, it looks like the water runs to the left. That’s the illusion: It runs to the right as it should since that’s downhill.

At a similar distance from the opposite direction, the water flow looks normal. For some reason, this drives me a little crazy. I keep trying to compensate for it.

The other morning I had a totally woo-woo silly moment: I’m making my life harder because I’m mentally trying to push water uphill when in reality the water is flowing easily downhill.

Doesn’t change a darn thing in my life, but does make me laugh. Years of yoga and this is what I get! Oooooommmmm.