That was the story I got from him, bit by bit.

The enormous broad tires of the chariots and the padded feet of the animals brought forth no sound from the moss-covered sea bottom; and so we moved in utter silence, like some huge phantasmagoria, except when the stillness was broken by the guttural growling of a goaded zitidar, or the squealing of fighting thoats. The green Martians converse but little, and then usually in monosyllables, low and like the faint rumbling of distant thunder.

We traversed a trackless waste of moss which, bending to the pressure of broad tire or padded foot, rose up again behind us, leaving no sign that we had passed. We might indeed have been the wraiths of the departed dead upon the dead sea of that dying planet for all the sound or sign we made in passing. It was the first march of a large body of men and animals I had ever witnessed which raised no dust and left no spoor; for there is no dust upon Mars except in the cultivated districts during the winter months, and even then the absence of high winds renders it almost unnoticeable.