Translation of the verse 31 from Surah Al-Anbiya’ : Number of verses 112 - - page 324 - Part 17.
And We have placed on the earth firm mountains, lest it should shake with them, and We placed therein broad highways for them to pass through, that they may be guided.
And We placed within the earth firmly set mountains, lest it should shift with them, and We made therein [mountain] passes [as] roads that they might be guided.
(21:31) And We set mountains firmly in the earth lest it should tilt to one side along with them *30 , and We left therein open paths *31 so that they may find their way. *32
*30) For explanation, see E. N. 12 of An-Nahl (XVI).
*31) "Open paths" are the passes between high mountains and the valleys and ravines made by the rivers in the mountainous regions and other natural ways that connect different regions on the earth.
*32) This is a very meaningful sentence. It may mean that the people may find paths for travelling on the earth, and it may also mean that the wisdom that underlies the skill and the system of their creation may guide them to the Reality.