diff --git a/lf.c b/lf.c
index e6b38ea..91e8d76 100644
--- a/lf.c
+++ b/lf.c
@@ -4740,7 +4740,6 @@ int digdown(lifeform_t *lf, object_t *o) {
 	enum OBTYPE digoid = OT_NONE;
 	getlfname(lf, lfname);
 
-
 	if (o) {
 		if (lfhasflag(lf, F_LEVITATING)) {
 			if (isplayer(lf)) {
diff --git a/map.c b/map.c
index 995052d..d2d89ce 100644
--- a/map.c
+++ b/map.c
@@ -9014,13 +9014,24 @@ int isdiggable(cell_t *c, enum OBTYPE withwhat) {
 			case CT_WALLDIRT:
 			case CT_WALL: 
 			case CT_WALLWOOD: 
+			// for digging down
+			case CT_CORRIDOR: 
+			case CT_MOSSROCK: 
+			case CT_LOOPCORRIDOR:
+			case CT_FLOORCARPET:
+			case CT_FLOORFLESH:
+			case CT_FLOORSNOW:
+			case CT_GRASS:
+			case CT_DIRT:
+			case CT_LOWFLOOR:
+			case CT_VLOWFLOOR:
 			//case CT_WALLGLASS: 
 				return B_TRUE;
 			default:
 				break;
 		}
 	} else if (ot->id == OT_A_DISMANTLE) {
-		// using dismantle ability - only mad-made materials.
+		// using dismantle ability - only man-made materials.
 		switch (c->type->material->id) {
 			case MT_BRICK:
 			case MT_WOOD: