The Mysterious Island Part 1 Chapter 17 - Visit to the Lake. The Indicating Current.

In which the enterprising Cyrus Harding, with the help of his companions, investigates a strange wound on a stranded dugong and uncovers a hidden outlet beneath the lake, devising a bold plan to lower the water level by blasting through granite with nitro-glycerine painstakingly produced by their own hands. The subsequent explosion unveils a powerful cascade that promises to serve the colony’s needs, marking a triumph born of science and steadfast resolve against nature’s unyielding stone.