Carrera GO turn insets with Rocks
This is a piece that fits inside a 180 degree turn for Carrera GO 1/43 track.
I used the inner curbs from https://www.thingiverse.com/thing:5776023/files and chose some of the rocks from https://www.thingiverse.com/thing:1747141
Used this one too. https://www.thingiverse.com/thing:5179232
UPDATE: Added other pieces...
A smaller 90 degree piece and an outer 45 degree piece with a barrier embedded in the rocks.