Cavern-Tunnel Wye Set B (Small Cavern)

Publisher's blurb: The Cavern-Tunnel Wye (small cavern) group of Naked Geomorphs contains 27 tiles, each with three connected openings, one or two of which are two-position openings (CD) and the remainder tunnel openings (T). Sets A and B are completely interchangeable. I.e., tile M31B can be replaced with tile M31A, without changing the basic structure of your map. Set B has broad passages with few restricted areas.