Max Nowell's sculptureTo Jedburgh to visit the abbey, and in the park beside the river is Max Nowell's sculpture representing James Hutton's realisation that rock formations must take hundreds of thousands - or millions - of years to develop. He noticed the vertical beds of greywacke underlying horizontal beds of sandstone beside the river - an unconformity. He deduced that earth movements must have moved the greywacke, and subsequent erosion and sedimentation caused the sandstone to be deposited on top of it. Hutton's Theory of the Earth was published in 1795 and helped lay the foundations of modern science, and challenged the way people viewed the world as much as Darwin did 64 years later.