"The underground roads <br />Are, as the dead prefer them, <br />Always tortuous." <br /> <br />"When he looked the cave in the eye, <br />Hercules <br />Had a moment of doubt." <br /> <br />Leaning out over <br />The dreadful precipice, <br />One contemptuous tree."<br /><br />W.H. Auden<br /><br />http://www.poemhunter.com/poem/three-short-poems/