Hertfordshire Geological Society
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Some other sites which may interest you

National organisations for the amateur and professional:

The Geologists Association

The Geological Society



Some neighbouring societies:

East Herts Geology Club

Bedfordshire Geology Group

Bucks Earth Heritage Group

Amateur Geological Society 

More links...


A Local Group of the Geologists Association


Last updated: 

The society is for anyone interested in geology, 
whether beginners or experienced.
This is our 46th year!

We hold monthly talks on a wide range of earth science topics, usually on the 2nd Thursday of the month
. We have several day and weekend field trips a year and sometimes a longer foreign excursion.   

Our talks normally take place at Oaklands College.
Click here to download detailed directions to the venue.

From September 2020 until further notice, all talks will take place online, via Zoom

Next talk:  Thursday 12 November, 7:30pm
Dr Jonathan Paul (Royal Holloway, London)
"The effects of stratigraphy and structure on the London Underground

The link for joining Zoom meetings will be emailed a few days in advance to all members.
If you have not received it by the day before the talk, please contact the

The GA's virtual FoG will take place over the weekend 7-8 November 2020.
You can see the developing programme of events here.
HGS is contributing these videos about 5 of Hertfordshire's important geological sites.

HGS vFoG Summary Video

    HGS Hill End Chalk Pit                          HGS  Castle Hill, Berkhamsted

HGS Bourne Gutter

          HGS  Barkway Chalk Pit                  HGS Little Heath pit, near Berkhamsted

Visit the HGS YouTube site
Return to the Festival Of Geology

"Hertfordshire Geology and Landscape" 

For more details of the book, see the HNHS web page.
 It can be purchased on-line from HNHS, or in person at any meeting of the HGS for only 35.

Learn about local geology

Introduction to the Geology Of Hertfordshire

Geological trails and guides
We are starting to build up a collection of downloadable geological trails, and guides to geologically interesting locations.   The first ones can be seen on the 'Trails and Guides' page.

Sites of special geological interest
A number of sites in Hertfordshire are officially designated as important for their geology or geomorphology.  Details and map

For lots of interesting information on Hertfordshire Puddingstone
visit the East Herts Geology Club's puddingstone page