Eschnerberg, Mountain ridge in Feldkirch, Austria and Schellenberg, Liechtenstein

Eschnerberg is a mountain ridge that stretches across the border between Austria and Liechtenstein, rising to about 700 meters in height. Several marked trails run across the different slopes and offer access from both sides of the international boundary.

The Borscht site near Schellenberg shows Rössen culture settlement from around 4400 BCE, among the earliest in the Rhine valley. The Schellenberger lords gave the ridge its name and built Neu-Schellenberg around 1200 and Alt-Schellenberg around 1250. The castles were quarried for stone in the 19th century and now belong to the Principality's historical society.

The name Schellenberg comes from the Schellenberger lords, who held the Lordship of Schellenberg and built two castles here; most Liechtensteiners still say Eschnerberg. The ridge is also linked in local legend to the Eschinerburg. A cultural hiking trail, the Eschner Höhenweg, crosses the mountain with information boards on the castles and regional history.

The ridge is best explored on marked trails that begin from Feldkirch and Schellenberg, with information boards placed along the routes. Parking is available at the main entry points, and the mountain is accessible year-round, though snow in winter may change conditions.

The two castle ruins on the ridge were given their names during excavations in the 1960s: archaeologists assumed the upper site was the younger one and called it Neu-Schellenberg. In 1980 Jakob Bill showed from old maps and chronicles that the names were reversed. Both ruins were quarried for building stone in the 19th century and now belong to the Principality's historical society.