"Based on an idea by Elisabetta Dami"--T.p. verso.
Summary
Geronimo Stilton's vacation plans are interrupted by the entire Stilton clan and a treasure hunt in the Black Hills of South Dakota, where he takes a hot-air balloon ride to Mount Rushmore.
Study Program
Accelerated Reader ATOS RL 4.2 1.0 147096 LARK LAKE