This informative and attractive folded poster has been produced by the Essex Rock and Mineral Society to accompany the other two posters: Fossils in Essex and Pebbles in Essex.
On one side is a chart of the rocks beneath your feet, and on the other side, Essex in past times from the deep, basement rocks dating back over 400 million years to the deposits of the present Ice Age.
Illustrated throughout with diagrams, maps and colour photographs. Ideal for the beginner.