the horizon doesn't dip. The horizon is always at eye level no matter your elevation.

Flat earther explaining lunar eclipse, which indicates the shape of the earth, much like the shape of all other planets, most of the 192 discovered moons and even the sun.

https://sciencing.com/ancient-greece-shape-earth-believed-be-5630.html

But you were claiming a few years ago that the sun doesn't go behind the horizon, somehow it just pops back on the opposite side of the horizon..

https://en.m.wikipedia.org/wiki/Eratosthenes