thorndon-pebble-hunter-sm Image 1 of 6 Rockwatch Pebble Detective! Saturday 31 May 2025 |Essex Rockwatchers were out in force at Thorndon Country Park this May for an exciting Pebble Trail Adventure – and what a fantastic day it was! Building on the pebble skills many members gained at our recent Harrow Weald Common event, this field trip gave everyone the chance to test their knowledge in the wild, guided once again by our brilliant geological experts Ian and Ros Mercer. Armed with curiosity (and a few hand lenses!), members followed the Pebble Trail through the park’s scenic woodlands, spotting and...