Meilen–Rorenhaab, Prehistoric lake settlement in Meilen, Switzerland.

Meilen-Rorenhaab is an archaeological site containing remains of a prehistoric lake settlement near Lake Zurich in Switzerland. Below the water surface lie ancient wooden posts and artifacts spanning multiple periods from the Neolithic through the Bronze Age.

In the winter of 1853–54, lowered water levels on Lake Zurich exposed the remains at Rohrenhaab, and the archaeologist Ferdinand Keller identified them. His examination of the site marked the beginning of pile-dwelling research, making Meilen–Rorenhaab a reference point in the history of archaeology.

The settlement shows how people lived along the lake shore thousands of years ago and what tools and objects they used in daily life. The finds tell the story of early communities that thrived in the Alpine region.

Access to the site is limited since strict protection laws preserve the submerged remains. Visitors can view the area from the shore and learn more through displays at nearby museums.

The site's waterlogged sediments preserved wooden piles and organic finds that dry land rarely keeps. Dendrochronological dates from its Early Bronze Age layers let researchers trace how building phases followed one another within a single period.