Mars
As of 2007 seven putative cave entrances have been identified in satellite imagery of the planet Mars, all so far located on the flanks of Arsia Mons. A more recent photograph of one of the features shows sunlight illuminating a side wall, suggesting that it may simply be a vertical pit rather than an entrance to a larger underground space.
Read more about this topic: List Of Caves In Papua New Guinea
Famous quotes containing the word mars:
“But in the dome of mighty Mars the red,”
—Geoffrey Chaucer (1340?–1400)
“Human beings will be happier—not when they cure cancer or get to Mars or eliminate racial prejudice or flush Lake Erie but when they find ways to inhabit primitive communities again. That’s my utopia.”
—Kurt Vonnegut, Jr. (b. 1922)
“What makes the United States government, on the whole, more tolerable—I mean for us lucky white men—is the fact that there is so much less of government with us.... But in Canada you are reminded of the government every day. It parades itself before you. It is not content to be the servant, but will be the master; and every day it goes out to the Plains of Abraham or to the Champs de Mars and exhibits itself and toots.”
—Henry David Thoreau (1817–1862)