Jared Diamond dismisses past climate change as a dominant cause of the island's deforestation in his book "Collapse" which assesses the collapse of the ancient Easter Islanders. Influenced by Heyerdahl's romantic interpretation of Easter's history, Diamond insists that the disappearance of the island's trees seems to coincide with a decline of its civilization around the 17th and 18th centuries. He notes that they stopped making statues at that time and started destroying the ahu. But the link is weakened because the Bird Man cult continued to thrive and survived the great impact caused by the arrival of explorers, whalers, sandalwood traders, and slave raiders.