Ooooooo! Look! Look! Just beside the famous human face mesa. That is unquestionably a human skull mesa. You can see the whole of the head plus the eye sockets. Clearly this is proof that intellegent cockroaches visited Earth three billion years ago and that we are the offspring of bacteria from their fecal remains (per Kilgore Trout).
I don’t think so. Reportedly they were senient beings of high intellegence, far superior to anything left behind from their little picnic on this chunk of rock. Details in the book “Venus on the Half Shell”.