Although the ground flora largely consists of ivy (Hedera helix) and sanicle (Sanicula europaea), there are several other species present, including three scarce orchids: bird's-nest orchid (Neottia nidus-avis), white helleborine (Cephalanthera damasonium), fly orchid (Ophrys insectifera), greater butterfly orchid (Platanthera chlorantha) and sword-leaved helleborine (Cephalanthera longifolia).