Perched on the ocean's edge, clinging to the slopes of the brooding, dormant Mount Haleakala, a 10,000-foot volcano that dominates all of Mauie.

One is at the Air Force Maui Optical Station, at the summit of Mount Haleakala.

A laser often used in such tests is at an Air Force Station atop Mount Haleakala on the Hawaiian island of in Maui.

Such arrays are operated on Mount Hopkins, Mount Haleakala, in Utah, at the South Pole and elsewhere.

SATURDAY - The Run to the Sun, a 36-mile Hawaiian ultramarathon, starts on Maui at sea level and climbs to the 10,023-foot summit of Mount Haleakala.

Much of Mount Haleakala is not always visible, but it is a towering presence, seemingly peaceable but continually threatening the island of Maui.

For his next trial, Mr. Henley wants to put the rover on a nearby island, 40 miles from Mount Haleakala.

However, scientists repeatedly failed to bounce a beam off the satellite's two-foot mirror from a laser atop Mount Haleakala on the Hawaiian island of Maui.

The telescope now searching the night skies for comets and asteroids is located at a major Air Force space-surveillance site atop Mount Haleakala on the Hawaiian island of Maui.

For people who want to spend a night near the crater under less Spartan conditions, the Kula Lodge (808) 878-2517, is on the slopes of Mount Haleakala.