As the pond's waters rise, the dam where Thumbelina and her father reside begins to break. With spring approaching, the father fears the melting snows will cause the dam to crack, threatening the lives of the tiny people who inhabit the meadow.
Pulgarcita
The dam, home to Thumbelina and her father, is on the verge of collapse due to the rapidly rising waters in the nearby pond, with the threat of even higher water levels looming with the approaching spring.