A foggy roller coaster on a surface of genus 2.
A surface of genus 7 with one boundary curve is divided into a yellow and a white region. The white region is fixed pointwise by the mapping class obtained as product (in any order) of the 6 green Dehn twists, and it is maximal up to isotopy among subsurfaces with this property.
A non-trivial surface bundle over the circle.
An instance of the insertion map, converting a labelled configuration of points in the cube into a new configuration of points satisfying some vertical constraints (courtesy of Florian Kranhold).
A "multiplication" of two configurations of unordered points, one on a surface, one on a disc.
