The Hypogeum by Andrew Hobson

Alma Baines is an ordinary woman whose life is irrevocably turned upside down when she loses everything she holds most dear. The forces of darkness want her life to end for reasons she does not truly understand, and only the intervention by a small group of heroes can save her. The forces of darkness are strong and powerful, led by the demon Baphomet,who is willing to go to any lengths to achieve his aim, which is nothing less than the total subjugation of the Earth and every living thing on it. The only ones who can stand against him are the Warrior, the Magician, the Shield, the Joker and the Mother, all of whom are joined by a special connection to the Forest that seems to know more than it is willing to admit. What links the formation of a volcano and an earthquake at opposite ends of the Earth, thousands of years ago with Stonehenge, Woodhenge and Old Sarum. And why is rural Wiltshire the setting for the ultimate battle between good and evil that will determine the fate of the entire planet.

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