1

Bone Pit

2

Boulder

3

Broken Terrain

4

Cairn

5

Changing Water Level

6

Chasm

7

Chimney

8

Climbable Walls

9

Constant Noise

10

Corpses

11

Crawlspace

12

Crumbling Ceiling

13

Crumbling Floor

14

Crumbling Ledge

15

Crumbling Walls

16

Crystals

17

Dead End

18

Dropoff

19

Echo Chamber

20

Explosive Barrels

21

Explosive Gas

22

Falling Rocks

23

Fire

24

Flame Vents

25

Flooded

26

Giant Eggs

27

Giant Lodestone

28

Giant Mushrooms

29

Giant Skeleton

30

Glowing Plants

31

Gypsum Flowers

32

Hanging Roots/Chains

33

Hidden Passage

34

Jagged Rocks

35

Lair

36

Lake

37

Lava

38

Lingering Magic

39

Long Tunnel

40

Loose Gravel

41

Low Ceiling

42

Low Walls

43

Maze of Passages

44

Miasma

45

Minecart and Rails

46

Mining Equipment

47

Mist

48

Mound

49

Mud

50

Multilevel

51

Mushroom Patch

52

Narrow Ledge

53

Narrow Passage

54

Nearby Monsters

55

Pile of Debris

56

Pit

57

Pool

58

Potholes

59

Puddles

60

River

61

Rock Formation

62

Rough Terrain

63

Rubble

64

Ruin

65

Scattered Bones

66

Skylight

67

Sleeping Bats

68

Slick Floor

69

Sliding Block

70

Slime Trails

71

Sloped Floor

72

Spider Webs

73

Spikes

74

Spore Pods

75

Spring

76

Staircase

77

Stalactites

78

Stalagmites

79

Steam Vents

80

Steep Slope

81

Stone Arch

82

Stone Columns

83

Stream

84

Tangled Roots

85

Thick Dust/Ash

86

Tight Squeeze

87

Tilting Platform

88

Torches/Lanterns

89

Translucent Walls

90

Trench

91

Uneven Ground

92

Vermin Nest

93

Vermin Swarm

94

Wall Fungus

95

Waterfall

96

Waterslide

97

Wind Tunnel

98

Winding Passage

99

Wooden Braces

100

Wooden Scaffolding