[Show slideshow] Sunday 12 April 2026 10:00am for coffee | 10:30am start | Finish approx. 1:00pm Celtic Harmony Camp, near Hertford (SG13 8NY) Minimum age: 7 Rockwatch is delighted to be teaming up with our friends at the Amateur Geological Society (AGS) – North London for a very special prehistoric experience! Join us at Celtic Harmony Camp, a reconstructed prehistoric settlement set in beautiful Hertfordshire countryside, where we’ll explore what life was really like in the Stone Age. What to expect An engaging introduction to prehistoric life Demonstrations of Stone Age tools and daily survival...