If everything were iambic tetrameter, as you suggest, poetry would be really, really boring. The first stanza has excellent rhythm, placing emphasis on important words, and causing you to place emphasis on words where in normal spoken prose you might not otherwise, enhancing the imagery. imAGine the FIRST MAN who HELD a STICK in ROUGH HANDS and DREW LINES on a COLD STONE WALL imAGine when the OTHers LOOKED when they SAID i see the ANtelope i SEE it

Swimmer963, I think the first stanza makes an excellent poem, whether or not you agree with the way I would read it. The rest could use some work, IMHO, but there's good imagery throughout. My best poems have always been the ones where I don't try to make a point on the first go round, but let the point come out upon rereading.