diff --git a/init.lua b/init.lua
index 7f1a03e..0517297 100644
--- a/init.lua
+++ b/init.lua
@@ -155,7 +155,7 @@ This opens to a truly hellish place, though for small mercies the air there is s
 The expedition parties have found no diamonds or gold, and after an experienced search party failed to return from the trail of a missing expedition party, I must conclude this is a dangerous place.]], 10 * nether.FASTTRAVEL_FACTOR),
 
 		is_within_realm = function(pos) -- return true if pos is inside the Nether
-			return pos.y < nether.DEPTH_CEILING
+			return pos.y < nether.DEPTH_CEILING and pos.y > nether.DEPTH_FLOOR
 		end,
 
 		find_realm_anchorPos = function(surface_anchorPos, player_name)
diff --git a/mod.conf b/mod.conf
index 84a7a01..6a7e193 100644
--- a/mod.conf
+++ b/mod.conf
@@ -1,4 +1,4 @@
 name = nether
 description = Adds a deep underground realm with different mapgen that you can reach with obsidian portals.
 depends = stairs, default
-optional_depends = moreblocks, mesecons, loot, dungeon_loot, doc_basics, fire, climate_api
+optional_depends = moreblocks, mesecons, loot, dungeon_loot, doc_basics, fire, climate_api, ethereal
diff --git a/nodes.lua b/nodes.lua
index eadac0e..3205783 100644
--- a/nodes.lua
+++ b/nodes.lua
@@ -529,7 +529,7 @@ minetest.register_node("nether:lava_crust", {
 	paramtype = "light",
 	light_source = default.LIGHT_MAX - 3,
 	buildable_to = false,
-	walkable_to = true,
+	walkable = true,
 	is_ground_content = true,
 	drop = {
 		items = {{