Explore "The Green World" by Hal Clement on Textopian. Read with annotations and highlights.
Four starts in as many different directions and twenty minutes of time showed fairly conclusively that the line of vegetation which had given rise to the "street" theory was growing along a straight crack, apparently a fairly ordinary joint, in the limestone. While several more holes would have to be drilled to prove it, even Mitsuitei was willing to admit that in all probability the remaining lines would be found to be over similar cracks.
"You must admit, though, that the regularity of this joint pattern is pretty unusual," the archaeologist said at length.