The near-surface geological bedrock Sonnenbühls is dominated by the rocks of the White Jura.

The limestones of the White Jura are heavily karstified and characterized by karst formations such as caves, sinkholes and dry valleys.

The following cities and towns are bordering to the municipality of Sonnenbühl, they are starting called clockwise in the north and part of the district of Reutlingen or to Zollernalbkreis¹ and district Tübingen.² Pfullingen, Lichtenstein, Engstingen, Trochtelfingen, Burladingen¹, Mössingen² and Reutlingen.

The name Erphinga (Erpfingen) appears on 16 November 777 for the first time in a deed of the Lorsch codex.

Genkingen belongs since 1506 to the nunnery Pfullingen and became part of Württemberg after the Thirty Years' War.

1098 it donated Graf Luithold Achalm the monastery Zwiefalten and 1454 Undingen came to Württemberg.

Count Eberhard von Württemberg bought the place in 1474, so in 1808 it came to Oberamt Urach, district Reutlingen.

In blue over golden (yellow) hills (Buhl) a golden (yellow) sun with 16 alternating consecutive straight and S-shaped curved golden (yellow) rays" Erpfingen Erpfingen Genkingen Genkingen Undingen Undingen Willmandingen Willmandingen Since 1987, there is a partnership of Sonnenbühl with the municipality of Corseul in France.

In the district Erpfingen the first Easter Egg Museum [5] of Germany was established and inaugurated in February 1993.

In the district Erpfingen is located since 1992 a spa garden and a 1300 meters long summer bobsleigh track.

The amusement park Dreamland on the Bear Cave (Bärenhöhle) is a real attraction, especially for families with small children.

These include Sonnenmatte, swimming and camping at Erpfingen, cycling, hiking and ski trails and touristically developed attractions such as the caves.