Want to know something awesome?  Squash vines root themselves periodically along the length of their growing vine.  This is handy in case some heartless insect desiccates the initial stem of the vine, making you worry that maybe your two lonesome squash vines are not going to make it.  They will!  They root themselves elsewhere!

SquashRoots

Want to know how I found this out?  I accidentally pulled up the roots.