Rather than a single tree , the passage that follows on the great sacrifices held every nine years at Uppsala speaks of a sacred grove adjoining the hof , of which each .
Every tree is sacred and in which the human and animal victims are hanged .
Rather than a single tree , the passage that follows on the great sacrifices held every nine years at Uppsala speaks of a sacred grove adjoining the hof , of which each and every tree is sacred and in which the human and animal victims are hanged .