Word: craterous
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...real thrill is to leave civilization altogether. One of the best points of departure is Hanalei; from there Kauai helicopters (for a fee of $100 an hour) take picnickers or sightseers to visit the two-thirds of the island that is accessible no other way: the rim of the crater of long-dead Mount Waia-leale (with 400 to 800 inches of rain a year, the wettest spot on earth), the hidden beaches like Honopu and the Valley of the Lost Tribe on the Na Pali coast, populated today only by prancing mountain goats. Said Jackie, after she had picnicked...
...year-old) Hawaii has arid, cactus-sprinkled, sleepily sloping uplands, rain forests, anthurium and macadamia groves, bizarre moonscapes of rock lava topped by the snow-capped peaks of Mauna Kea (13,796 ft.) and still-active Mauna Loa (13,680 ft.). Middle-aged Maui is dominated by the rugged crater of dormant Haleakala (House of the Sun). At its rim nestles a Defense Department observatory; the pack trip to the floor of the crater is like spending a day on the moon...
...tons, had a nucleus ten miles in diameter, and crashed into the moon at a speed of 35 miles per second. The explosion produced by the stupendous collision was intensified by the comet's high content of ice expanding into steam on impact. The resulting blast produced a crater 60 miles across and at least two miles deep; it hurled pulverized debris hundreds of miles in all directions...
...heat of impact and the resulting steam penetrated deep into the moon and formed a pool of molten material that later solidified as the crater floor. The hot lunar material and huge chunks of rubble floating in it, says Kuiper, created the volcanic structures that can be seen in Orbiter's picture...
Housekeeping Pictures. Other scientists had other interpretations. Cornell University Astronomer Thomas Gold, who believes that Copernicus was formed, like most other lunar craters, by the impact of a meteorite, theorizes that its smooth floor consists of compacted dustlike material that is continually being knocked off crater walls by micrometeorites. U.S. Geological Survey Geologists John McCaulay and Richard Eggleton were fascinated by the apparent presence of erosion channels on the far wall of the crater. They suggest that the channels may have been formed by solid particles flowing down the crater wall...