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:
“Venus me yaf my lust, my likerousnesse,
And Mars yaf me my sturdy hardinesse.”
—Geoffrey Chaucer (1340?–1400)
“It makes us, or it mars us, think on that,
And fix most firm thy resolution.”
—William Shakespeare (1564–1616)
“The sword’s a cross; thereon He died:
On breast of Mars the goddess sighed.”
—William Butler Yeats (1865–1939)