These are
taken from the observatories located
on the top of mount mauna-kea on the island
of Hawaii in Hawaii. Mount mauna-kea is the
largest mountain in the world when you add
it's depth below sea level and it's
elevation above. It's peak is 13,796
above sea level and it's base is 19,000 feet
below sea level. There are several
observatories on top.