This is a LEGO train track layout with two levels and long slopes.
The steepness of the slopes is 2 / 3 bricks per track. The whole thing was a bit cumbersome to do in LDD. I indicated the "7996 Train Rail Crossing for RC Trains" with superimposed switch tracks. Also, the slopes are only marked with the appropriate piles. At some point the design does not fit exactly which in reality is not a problem. You can of course refine the design with pieces of "8867 Flexible Train Track".