Alexander Rothaug was an Austrian painter and illustrator active in the late 19th and early 20th centuries. I assume he might be categorized as a Symbolist, which in itself is a loose classification as art styles go.
Rothaug seems particularly inspired by dramatic scenes from myths and legends, often populated with stylized, exaggeratedly muscular figures and rough, visceral textures.
It’s his use of texture that grabs my attention, particularly in the representation of rocks and stone.
Be aware that a number of the works you will find contain nudity, even if highly stylized, and might be considered mildly NSFW.