Most images link to full size versions.
A plot of progress to date.
A couple of wordles of Munro names; text size is a function of height,
colour varies from east (tan) to west (green).
The recipe goes something like:
Scrape the MunroMagic
websites for Munro descriptions.
Use text similarity metrics to come up with a measure of how alike
any pair of Munros seems to be based on those descriptions.
Starting with a graph (network) consisting of the two "most similar" Munros
(generally Aonach Beag and Aonach Mor, perhaps unsurprisingly), join Munros
to the most similar one already accreted.
Use a graph layout tool to arrange the result;
adding some colour (generally by longitude) and sizing the nodes by altitude.
Some results (there are numerous variations on the above scheme possible):
(thumbnails link to large zoomable SVG images).