Very strange animals.
The Haiku stairs on Oahu aka the Stairway to Heaven has 3,922 steps lead up to the stunning Puu Keahiakahoe summit. The stairway was originally wooden and was installed during World War II so the military could access a radio station antennae 2,000 feet up the mountain. In the 1950s, the stairs were replaced with steel steps that led to a newly established Coast Guard navigation station. The navigation station has been closed since the 1980s and the hike is also off-limits now; a security guard sits at its entrance for most of the day and the Honolulu Board of Water Supply — which has jurisdiction over the hike — requires that anyone who goes up it sign waivers and present a $1 million liability insurance policy.