Visitors leave lint in a US cave, forcing volunteers to clean it up
More than 30,000 people enter Lehman Caves at Great Basin National Park in Nevada each year, and every visitor unintentionally leaves behind a small amount of material. Fibres from clothing, hair, skin cells, dirt from shoes and objects that fall from pockets can accumulate inside the cave. The National Park…
The Times of India ·
The Times of India
