Fulbert-Stollen

The Fulbert-Stollen extends 880 meters through volcanic terrain, maintaining a height of 3 meters and a width of 1.30 meters throughout its course.

Construction of this water management system began in 1160 under Abbot Fulbert of Laach, following evidence of drought conditions confirmed through dendrochronological studies.

The gallery demonstrates medieval German engineering capabilities through its kanat construction method, which involved drilling vertical shafts before horizontal tunneling.

The drainage system continues to regulate water levels in Laacher See, channeling excess water into Laacher Mühlteich pond near Mendig through the Laachgraben.

The original structure's construction reduced the lake's surface area by 48 hectares, creating new agricultural land while protecting the Maria Laach Abbey from flooding.

Location: Rhineland-Palatinate

Inception: 1160

GPS coordinates: 50.40100,7.26666

Latest update: March 2, 2025 22:20