The Mystery in the Hallstatt Salt Mine

By David G Hennessey

High above the glittering lake and storybook rooftops of Hallstatt, Austria, the world's oldest salt mine hides a dangerous secret.

Will Grace solve the mystery of the Hallstatt

Salt Mine before danger closes in on the mountain?

• Format: Paperback
• Language: English
• ISBN: B0GYQKTDYN
• ISBN13: 9798235517042
• Release Date: March 2026
• Publisher: David G. Hennessey
• Length: 222 Pages
• Weight: 0.58 lbs.
• Dimensions: 0.5" x 5.5" x 8.5"