The most spectacular groves of redwoods are found at the mouths of rivers and on river benches where periodic flooding over time deposited layers of nutrient-rich soil.
(The most spectacular groves of redwoods; are found; L:at the mouths of rivers and on river benches) (periodic flooding over time; deposited; layers of nutrient-rich soil; L:river benches)
The most spectacular groves of redwoods periodic flooding over time
are found deposited
L:at the mouths of rivers and on river benches
layers of nutrient-rich soil L:river benches