Mineral stained pond on collapsed flank of Papandayan Volcano, an active four crater caldera, Garut, West Java, Java, Indonesia, Southeast Asia, Asia

Water-stained sandstone on Seven Mile Beach, South Island, New Zealand, Pacific

A contaminated water course near Liverpool. Merseyside, England, United Kingdom, Europe

Peat staining in water as a stream goes over a weir before entering Haweswater Reservoir in the Lake District, Cumbria, England, United Kingdom, Europe

Aysgarth Falls at Aysgarth in the Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe

Water stained with peat in Swaledale, Yorkshire Dales, Yorkshire, England, United Kingdom, Europe

Peat staining in water as a stream goes over a weir before entering Haweswater Reservoir in the Lake District, Cumbria, England, United Kingdom, Europe

Aysgarth Falls at Aysgarth in the Yorkshire Dales National Park, Yorkshire, England, United Kingdom, Europe

Ancient Brick Aqueduct, Kyoto, Japan