Hidden Homes and Passageways BelowSize: 15Difficulty: easyObscure Architectural Styles of Underground CitiesPerfect for beginners with simple, common vocabulary
Hidden Halls and Earth SheltersSize: 17Difficulty: easyObscure Architectural Styles of Underground CitiesPerfect for beginners with simple, common vocabulary
Hidden Designs of Underground HavensSize: 17Difficulty: easyObscure Architectural Styles of Underground CitiesPerfect for beginners with simple, common vocabulary
Hidden Designs of Underground LivingSize: 8Difficulty: easyObscure Architectural Styles of Underground CitiesPerfect for beginners with simple, common vocabulary
Labyrinthine Vaults and Hypogeal DesignsSize: 5Difficulty: hardObscure Architectural Styles of Underground CitiesChallenging puzzle for experienced crossword solvers