Ancient Shores is a science fiction novel by American writer Jack McDevitt, published in 1996.

The story begins when farmer Tom Lasker and his son, Will, uncover a seemingly brand new yacht.

Collingswood enlists April Cannon, a worker at a chemical lab who discovers that the yacht is made of an unknown material.

Collingswood and Cannon discover something else on a nearby ridge which is part of a Sioux reservation.

The discovery that the structure contains the means to access other sites not on Earth sets off a struggle between the Government and the Reservation for control of it.