Gutenberger Höhle, Show cave in Lenningen, Germany.

The Gutenberger Höhle is a show cave in the Swabian Jura near Lenningen, Baden-Württemberg, at 680 metres above sea level. It runs 180 metres along two parallel Rhine-direction fissures, with a vertical extent of 28 metres, and consists of seven halls. Its entrance is the 17-metre-long Heppenloch; the upper sections are roomy, the lower gorge narrow, and the cave holds stalactite formations.

The cave was discovered in 1888/89 through excavations from the long-known Heppenloch. August Hedinger found ice-age animal artefacts there. It has been open to the public as a show cave since April 1890, along a 110-metre section, and has been electrically lit since 1967.

The cave is reached through the Heppenloch, a 17-metre-long passage known to locals long before the cave itself was found in 1888/89. Excavations there yielded the only remains of a Barbary macaque ever found in Germany, evidence that the animal lived here in the ice age.

The cave is entered through the 17-metre-long Heppenloch and opened to visitors in April 1890 along a 110-metre route; electric lighting was installed in 1967. The upper sections are roomy, while the lower gorge is narrow because of the rock. The Gußmannshöhle show cave lies only 200 metres away.

Excavations uncovered fossils of a rare monkey species found nowhere else in Germany. These discoveries show that tropical animals could reach the Swabian region during warmer periods in prehistoric times.