CSG has been offering an ad-hoc training in surveying for many years. Initially this was mainly custom developed for clubs and expeditions, usually teaching the fundamentals of surveying.

With the coming of the DistoX and PocketTopo this has evolved into a region by region weekend course using paperless surveying and Therion. There is still a fair amount of tailoring to the needs of the group and an advanced course has been discussed.

The Therion and DistoX Training Course Guide (now slightly outdated by TopParser and SexyTopo) have been developed from this course. Note that a rewrite of this training course is underway, and a much improved version of this training tutorial can be downloaded from http://wscc.darkgem.com/footleg/therion/

Update (October 2018)

The BCRA Cave Surveying Group is now offering intermediate courses with roughly the following content:-

What and who:

The scope of this training course is to improve the skills of people who, ideally as a minimum have attended a CSG Paperless Surveying training course or are currently using Therion for their mapping projects.

The course is not aimed at people new to Therion. Attendees must have a working knowledge of the software for everybody to get the most out of the weekend.

Underground sessions are not planned as this is primarily a software training course.


We shall cover things such as: -

  • Project hierarchy and management, pros and cons of different methods
  • How to manage and plan your surveying in more complicated caves to get the best out of Therion
  • survey/endsurvey centreline/endcenterline, what does it all mean.
  • Index files and Joining maps together
  • Extended and projected elevation best practice
  • Config files
  • Layout files, how to use, what you can do
  • The use of flags and other instructions
  • How to handle surface surveys
  • Locating cross sections on main index maps
  • Surface overlays
  • How to make our Loch models look better

The courses on offer are for training only. Organisation of delegates, venue, accommodation etc must be organised by whoever wants to arrange a course in their area.

If anyone is interested in courses, email (preferred [ secretary  cavesurveying.org.uk] )