“Here be dragons” (Latin “hic svnt dracones”) means dangerous or unexplored territories, in imitation of a supposed medieval practice of putting dragons, sea serpents and other mythological creatures in uncharted areas of maps.
Software programmers sometimes use this expression to indicate sections of particularly complex and obscure passages of the source code of a program so the user or other programmers who would access them are warned.
Over the holiday period (Dec 2015 – January 2016) I redesigned and reformatted my site here. My blog has a database with over two years of daily posts.
This new theme formats posts differently to the old one. If you venture too far into categories – where lists of older posts appear – you may see this warning:
“Here be dragons”
It simply means that older posts haven’t been reformatted yet.
Venture there at your own peril.