The sound of the water changed. At the top it was crystal clear, tinkling shrill and shallow as it tumbled down the gentle slope between its soft earthy banks. Glittering and sparkling under the hot sun and enjoying the cool shady protection of the ancient woodland it trickled through and fed. Then with a deep gurgle it suddenly cascaded over exposed bedrock and poured into a long deep pool. As if it were aware of the “derring do”of the moment the water seemed to roar out loud as it launched into the air and cackled as it plunged into the pool below. The deep resonance of rock on rock being tumbled shook the bank. Further into the pool the surface quickly became still and quiet, dark and reflective as if contemplating its survival.