HexWorld Relief Map 1

Some of my recent deviations have been related to a software project I've started, which can probably best be described as a "virtual train set". In order to allow a greater variety of track angles, this software will be based on a grid of hexagonal cells. Furthermore, the world itself will repeat like a hexagonal tile. (It could also be seen as a repeating parallelogram tile, as it's actually represented internally.)

Anyway, I intend to incorporate hills (and eventually, bridges and tunnels) into the simulation. That means I need to generate some elevation models with the right seamless tiling properties. Here's one possibility. At first glance it may look like a bunch of mountainous islands, but there are some areas that are relatively flat. Also, tenuous land bridges between continents make it possible, yet non-trivial, to design a railroad that goes around the world and connects back to itself.

Any given point in the world actually appears four times in this map.