THE DESCENT OF EASTWATER CAVERN, THE SECOND VERTICAL DROP 64 From Sketch by H. E. BALCH. THE GREAT CANYON, EASTWATER CAVERN 65 From Sketch by H. E. BALCH. ENTRANCE OF SWILDON'S HOLE 72 Photo by M. MARTEL. WATERFALL, SWILDON'S HOLE 73 Photo by H. E. BALCH. ENTRANCE OF STALACTITE CHAMBER, SWILDON'S HOLE 78 Photo by BAMFORTH, Holmfirth. STALACTITE CURTAINS, SWILDON'S HOLE 79 Photo by BAMFORTH, Holmfirth. STALACTITE CHAMBER, SWILDON'S HOLE 80 Photo by BAMFORTH, Holmfirth. STALAGMITE PILLARS IN GOUGH'S GREAT CAVERN 84 Photo by GOUGH, Cheddar. THE PILLARS OF SOLOMON'S TEMPLE, GOUGH'S CAVES, CHEDDAR 85 Photo by GOUGH, Cheddar. ORGAN PIPES, GOUGH'S CAVES, CHEDDAR 86 Photo by GOUGH, Cheddar. "NIAGARA," GOUGH'S CAVE, CHEDDAR 87 Photo by M. MARTEL. IN COX'S CAVERN AT CHEDDAR 92 Photo by BAMFORTH, Holmfirth. GREAT RIFT CAVERN, CHEDDAR GORGE 93 Photo by BAMFORTH, Holmfirth. ENTRANCE TO LAMB'S LAIR, HARPTREE 116 Photo by BAMFORTH, Holmfirth. PLAN AND SECTION OF THE GREAT CAVERN OF LAMB'S LAIR 117 By H. E. BALCH. THE "BEEHIVE" CHAMBER, LAMB'S LAIR 118 Photo by BAMFORTH, Holmfirth. STALACTITE WALL, LAMB'S LAIR 119 Photo by BAMFORTH, Holmfirth. ENTRANCE TO GREAT CHAMBER, LAMB'S LAIR 120 Photo by BAMFORTH, Holmfirth. LARGEST CHAMBER IN SOMERSET, LAMB'S LAIR, HARPTREE 121 From Sketch by H. E. BALCH. STALACTITES IN ENTRANCE GALLERY, LAMB'S LAIR 122 Photo by BAMFORTH, Holmfirth. THE OGO, NEAR ABERGELE 128 Photo by E. A. BAKER. INSIDE THE OGO, NEAR ABERGELE 129 Photo by E. A. BAKER. IN THE OGO, NEAR ABERGELE 130 Photo by E. A. BAKER. A PRE-GLACIAL CAVE, LLANDULAS 132 Photo by E. A. BAKER. ON THE CEIRIOG 134 Photo by E. A. BAKER. UPPER CEIRIOG CAVE 135 Photo by E. A. BAKER. LOWER CEIRIOG CAVERN 136 Photo by E. A. BAKER. IN STUMP CROSS CAVERN 140 Photo by E. A. BAKER. THE PILLAR, STUMP CROSS CAVERN 141 Photo by E. A. BAKER.