The Rheinwesterwald Volcanic Ridge (German: Rheinwesterwälder Vulkanrücken), or more rarely, the Asberg Plateau (Asberg-Hochfläche[1]) is a hill ridge and natural region, roughly 13 kilometres long and 3 to 4 kilometres wide, in the north of the German state of Rhineland-Palatinate and south of North Rhine-Westphalia west of the Rhine, which is adjoined in the south by the Siebengebirge.
The name was introduced in the late 1950s together with the natural regional major unit of Niederwesterwald.
The ridge or plateau also bears the regional name of Linzer Höhe ("Linz Hills") south of the Asberg.
This name was being used by the 17th century to refer to the area outside the town walls of the church parish of Linz and on the side facing the hills.
The settlements of the natural region are Ginsterhahn, Grendel, Hargarten, Kaimig (municipality of St. Katharinen), Kretzhaus (borough of Linz am Rhein), Ober- and Untererl (municipality of Kasbach-Ohlenberg), (southwestern part of) Vettelschoß, Oberkalenborn (municipality of Vettelschoß), Ronigerhof (borough of Linz am Rhein) and Rothe Kreuz (municipality of Leubsdorf).