'Now rest we here, for we are come to the end of the world and are safe,' but, as he seated himself and looked, there in the same place on the far horizon he saw, in the sorrowful heavens, the Eye.
"The Eye of Dread"
Payne Erskine
In the meantime the sun emerged from beyond the horizon and, as usually happens in the tropics, in a moment it was day.
"In Desert and Wilderness"
Henryk Sienkiewicz
That is the distance from your zenith to the horizon.
"Lectures in Navigation"
Ernest Gallaudet Draper