Hanayama Huzzle Cast PLANET Puzzle - Level 4

A ball with rugged projections and a ring around it.This is a maze puzzle that is solved by rolling the sphere.
It was tempting to call this puzzle design Virus or Covid or Corona because of the appearance  but this was perceived as too indelicate.

Planet is the original name given by the creator of this puzzle, the Japanese designer Masui Ohno.