from the introduction
…an updated Caves and Caverns generator that will help GMs to create interesting and complex cave and cavern labyrinths. You'll find this included below... Caves & Caverns part 2 is a list of cave and cavern (Speleological) definitions to aid GMs.
This is a set of multi-column tables that can be used to generate cave systems. No diagrams, illustrations or maps are provided but there is a section of definitions.
Seven tables are provided and there is a brief section with some examples.