Texture Sources:
All textures have been modified.

Rope Texture:
Tim van de Vall <timvandevall.com>
Special permission for use in OpenClonk under the CC BY 3.0 license.

Wood Texture:
Public Domain - CC0

Metal Texture:
"Grzesiek" <https://www.flickr.com/photos/stoyan/>
<https://www.flickr.com/photos/stoyan/387961807/>
CC BY 2.0 (licensed under CC BY 3.0 after modification)