Sci Fi Saturday: The Cryptoterrestrials

'Most ev'rybody's been there, but most don't
Remember it. A garden, lush and green
And deathly quiet stands where people won't
Suspect it. There they live. The air is clean,
The water pure. They have no dwellings. We
Who know them, know we'll never understand
Their presence. One brave soul, long since set free
From this existence, once brought back a strand
Of something like a hair. Its DNA
Is earthly; they are close to us, more kin
Than even chimpanzees, but there's no way
They're just some hiding humans. Take their skin,
Pale green, as though they sport some chlorophyll.
I think they're of the future, if you will.