Wildkirchli (English: Wild Chapel) are three interlinked caves situated in the Alpstein massif in the Appenzell Innerrhoden canton of Switzerland, north-east of Mount Säntis Switzerland. The caves are located at a height of . They are notable for the traces of Paleolithic Neanderthal habitation, dating to c. 40,000 BP, and cave bear bones dating to 90,000-40,000 BP. A museum at the site houses a full bear skeleton that was found in one of the caves.