The former gravel pit near the Rhine in Mäder has developed into a near-natural biotope over the decades. Reed beds and young forests line the water body, which is particularly valuable for both amphibians and birds.
| Location | Austria - Vorarlberg - Feldkirch |
| Website | https://www.respektiere-deine-grenzen.at/schutzgebiete/sandgrube |
| Area | 4.23ha |
| IUCN Category | V |
| DtP ID | d7fa545e-4b1d-4a7b-88d5-b3a788f0a781 |
| Name and division |
Vorarlberg, Amt der Landesregierung
Umwelt- und Klimaschutz |
| Website | https://vorarlberg.at/-/naturvielfalt-vorarlberg |
| Address |
Landhaus
6901 Bregenz Austria |
Officially public dedicated streets/places