"Nature" by Arthur Machen

The picture used is "Sonnenuntergang am Starnberger See" by Christian Thiergan, used here under the Creative Commons Attribution-ShareAlike 3.0 Unported license (https://creativecommons.org/licenses/by-sa/3.0/deed.en).

Surely the scene described in the story must be set in Wales, and Starnberger See is in southern Germany, but boy oh boy what a sunset in that picture! The story describes it like fire, and this does very much give that impression!

To follow along: https://en.m.wikisource.org/wiki/Ornaments_in_Jade/Nature