#define DF1_NO_DOORS 0x00000020L
#define DF1_WATER_RIVER 0x00000040L
#define DF1_LAVA_RIVER 0x00000080L
-#define DF1_WATER_RIVERS 0x00000100L
-#define DF1_LAVA_RIVERS 0x00000200L
+#define DF1_XXX08 0x00000100L
+#define DF1_XXX09 0x00000200L
#define DF1_CAVE 0x00000400L
#define DF1_CAVERN 0x00000800L
-#define DF1_NO_UP 0x00001000L
-#define DF1_HOT 0x00002000L
-#define DF1_COLD 0x00004000L
-#define DF1_NO_DOWN 0x00008000L
+#define DF1_XXX12 0x00001000L
+#define DF1_XXX13 0x00002000L
+#define DF1_XXX14 0x00004000L
+#define DF1_XXX15 0x00008000L
#define DF1_FORGET 0x00010000L
#define DF1_LAKE_WATER 0x00020000L
#define DF1_LAKE_LAVA 0x00040000L
#define DF1_NO_VAULT 0x00200000L
#define DF1_ARENA 0x00400000L
#define DF1_DESTROY 0x00800000L
+#define DF1_XXX24 0x01000000L
#define DF1_NO_CAVE 0x02000000L
#define DF1_NO_MAGIC 0x04000000L
#define DF1_NO_MELEE 0x08000000L
#define DF1_CHAMELEON 0x10000000L
#define DF1_DARKNESS 0x20000000L
+#define DF1_XXX30 0x40000000L
+#define DF1_XXX31 0x80000000L
#define DF1_LAKE_MASK (DF1_LAKE_WATER | DF1_LAKE_LAVA | DF1_LAKE_RUBBLE | DF1_LAKE_TREE)