Reunited for the summer, the Swallows and Amazons with Dick and Dorothea launch a prospecting expedition to find the lost gold mine of the high hills above the lake.
Worst of all is the sinister Squashy Hat, who appears to be a rival prospector and who\'s certainly a spy - how can they keep working without him discovering what they\'ve found?.
Reunited for the summer, the Swallows and Amazons with Dick and Dorothea launch a prospecting expedition to find the lost gold mine of the high hills above the lake