Mysterious signs /
John Townsend.
- Chicago, IL : Raintree, c2004.
- 56 p. : col. ill., col. maps ; 24 cm.
- Out there? .
- Townsend, John, 1955- Out there? .
Includes bibliographical references and index.
What on earth do we look like? -- Signs amd wonders -- Carved on the earth -- Secrets of the stones -- Power of the pyramids -- Mystery of the mounds -- Dents and dimples -- What on earth will we look like.