The steeply rising Erthaler Straße to the east was formerly known as "Mainzer Straße". The current name refers to the politically significant and wealthy noble family of Erthal.

The current eastern building limit nearly coincides with the location of the late medieval "Thalpforte", which once regulated the path towards Finthen/Mainz. At the house Erthaler Str. 26, a short section of the fortification wall has been preserved almost in its full height.

Until the 1980s, a massive hollowed-out poplar trunk – locally referred to as "dicker oder auch Belleboom" (Belle = poplar) – still recalled a particularly terrible storm on June 29, 1730, the aftermath of which extended far beyond those of 1872. The chronicler reports that during just one hour, the masses of mud and rubble rushing down from the Mainz mountain plateau claimed 16 lives in the village, countless livestock, and more than 30 buildings. Devastating damage also occurred in the district. A striking testimony remains in the upper reach of the trench; a sinking of about 10 m deep and almost 800 m long, which transitions here behind the small concrete bridge into the northern course of the former dam system and, called "Effengraben", forms a last insurmountable section with its densely overgrown alder stock.