Notably, the Tüllinger Berg is characterized by the break-off edge of the high strand of the Rhine Valley and the meadow floodplain.
[1] The Tüllinger Berg is crisscrossed by numerous hiking trails, serving as a vantage point and a recreational area for the Markgräfler Hügelland region.
Due to its soil diversity and mild climate, the slopes of the Tüllinger are utilized for cultivating various crops, including the renowned Markgräfler wine.
Large portions of the mountain have been designated as protected areas, making it an essential habitat for a diverse range of flora and fauna.
To the east of the hilltop is the district of Tüllingen, offering scenic views of the border triangle, the Rhine bend, and the surrounding cities of Lörrach, Weil am Rhein, and Basel.
The northeastern foothills of the Tüllinger Berg border the district of Tumringen, while the northwestern end is adjacent to the community of Binzen.
The eastern slope of the Tüllinger Berg is not very rugged, but it still rises about 160 meters compared to the city area of Lörrach to the east and the valley axis.
A very small share of the Tüllinger Berg's area belongs to the Swiss municipality of Riehen, which has some vineyards on the southeastern slope, known as "Schlipf".
As a result, a 345-hectare region of the mountain, composed of three different sub-areas, is designated as the Tüllinger Berg and Tongrube Rümmingen Protected Area under the Fauna-Flora-Habitat Directive (FFH).
The eastern hill of the Tüllinger Berg belongs to the western edge of the Southern Black Forest Nature Park.
[7] Being the southern end of the Markgräfler Hügelland, the Tüllinger Berg is preserved in relief inversion within the flexural rim depression, leading to a geological structure that deviates from the rest of the hilly terrain.
In 1821, Peter Merian described the precipitation of a "freshwater formation" at the "Dillinger Berg" (Tüllinger Berg) and identified three types of rocks in his description: first, a whitish to dirty yellow or brown friable marl; second, a firm rock with "a fracture that is shallowly fusiform on the whole"; and third, a firm yellow-grayish or black limestone with fossils (planorbs and lymnae).
Along the ridge of the mountain, Upper Oligocene strata of clay marl, freshwater limestones, and fine sands can be found.
In certain areas of lesser extent, loose or solid rock bodies with largely dissolved structures (landslide mass) are present.
Human intervention, such as road construction, excavation of ditches and pits, and other slope incursions, has sometimes caused or facilitated major landslides after 1758.
[20] The area of the Tüllinger Berg is ornithologically important beyond the region due to the presence of a large number of bird species, totaling about 40, in the structured and old-wooded orchard meadows.
This relative of today's cultivated tulip was probably introduced into the gardens of Central Europe in the 16th century as an ornamental plant from the Mediterranean region.
In order to relieve this cumbersome transit traffic, the duty-free road, which runs partly on Swiss territory, was opened in 2013 as a link between the two towns.
Along the Westweg, a few kilometers from the highest point of the Tüllinger Berg is the Daur-Hütte, named after Hermann Daur, a refuge at the edge of the forest.
The 92-kilometer Markgräfler Wiiwegli ends at Ötlingen on the panorama path of the Tüllinger Berg and then leads down to the central Lindenplatz in Alt-Weil.
[28] A section of the Jakobsweg, coming from Binzen, leads through the village street of Ötlingen and further along the Tüllinger Berg to Weil am Rhein and into Switzerland.
[33] The mild climate, primarily influenced by warm air masses from the Mediterranean region through the Burgundian Gate during spring, along with the diverse and nutrient-rich soils, allows for the cultivation of wine on the Tüllinger slopes in the Markgräfler Land.