ROS - does the bottom left echo the centre?

[R. Sale]

The purple and red 'thingies' match in structure, number and position, but the blue and green portions appear to be reversed and the gold area(s) is either unified or split three to one. If the purported 'volcanoes' are connected, then that would seem to imply an attempt to represent two different levels each with separate, though potentially corresponding, features.