sentences:  Undergrowth is never cleared, there is no logging allowed and deadfalls and lightning-struck trees are allowed to proceed naturally with their processes, unless they impair access to the grove.This rich, biotic environment is filled with natural nutrients which make up for the massive amounts of waterfall which might otherwise deplete the soil.Old growth groves such as this will show the birth (shoots and burls) and death (rotting trees and "fairy rings") of ancient redwoods, many of whose birth was before the Battle of Hastings in 1066.