Frozen Echoes by Ed Downes

Under the Antarctic ice, the frozen echoes of a civilization wait to be reborn. Dr. Flint Hill, an Antarctic researcher, has a centuries-old frozen ship burst through the ice near his base. Dr. Eva Ward, a cultural anthropologist, journeys deep into the Amazon jungle to investigate a strange flute recovered at a dig site. Hill is overwhelmed when a mysterious duo show up in a helicopter, followed by the United States Navy, both drawn by a strange signal emitting from the frozen ship. Back in Sao Paulo, Eva fights off an attacker set on stealing the flute and ending her life, fleeing to a hacker friend to hide. Aboard the ship, Hill and the Navy discover the remains of a strange creature before the ice closes around them, threatening to end their investigation prematurely. Eva's friend takes her prisoner, forcing her to escape and make her way toward the one clue he provided: Antarctica. Joining forces, Flint and Eva use the Navy's resources to head under the ice, where they find the frozen echoes of a civilization waiting to be reborn. But is the cost one they’re willing to pay?