diff --git a/mods/CORE/mcl_worlds/init.lua b/mods/CORE/mcl_worlds/init.lua
index d032426d..35549ffa 100644
--- a/mods/CORE/mcl_worlds/init.lua
+++ b/mods/CORE/mcl_worlds/init.lua
@@ -70,6 +70,12 @@ function mcl_worlds.has_weather(pos)
        return pos.y <= mcl_vars.mg_overworld_max and pos.y >= mcl_vars.mg_overworld_min - 64
 end
 
+-- Takes a position and returns true if this position can have Nether dust
+function mcl_worlds.has_dust(pos)
+       -- Weather in the Overworld and the high part of the void below
+       return pos.y <= mcl_vars.mg_nether_max + 64 and pos.y >= mcl_vars.mg_nether_min - 64
+end
+
 -- Takes a position (pos) and returns true if compasses are working here
 function mcl_worlds.compass_works(pos)
        -- It doesn't work in Nether and the End, but it works in the Overworld and in the high part of the void below
diff --git a/mods/ENVIRONMENT/mcl_weather/init.lua b/mods/ENVIRONMENT/mcl_weather/init.lua
index e31331f5..c7b8fb6d 100644
--- a/mods/ENVIRONMENT/mcl_weather/init.lua
+++ b/mods/ENVIRONMENT/mcl_weather/init.lua
@@ -10,6 +10,7 @@ end
 dofile(modpath.."/weather_core.lua")
 dofile(modpath.."/snow.lua")
 dofile(modpath.."/rain.lua")
+dofile(modpath.."/nether_dust.lua")
 
 if minetest.get_modpath("lightning") ~= nil then
   dofile(modpath.."/thunder.lua")
diff --git a/mods/ENVIRONMENT/mcl_weather/nether_dust.lua b/mods/ENVIRONMENT/mcl_weather/nether_dust.lua
new file mode 100644
index 00000000..2fc7e5dd
--- /dev/null
+++ b/mods/ENVIRONMENT/mcl_weather/nether_dust.lua
@@ -0,0 +1,39 @@
+mcl_weather.nether_dust = {}
+mcl_weather.nether_dust.particles_count = 99
+
+-- calculates coordinates and draw particles for Nether dust
+mcl_weather.nether_dust.add_dust_particles = function(player)
+	for i=mcl_weather.nether_dust.particles_count, 1,-1 do
+		local rpx, rpy, rpz = mcl_weather.get_random_pos_by_player_look_dir(player)
+		minetest.add_particle({
+			pos = {x = rpx, y = rpy - math.random(6, 18), z = rpz},
+			velocity = {x = math.random(-30,30)*0.01, y = math.random(-15,15)*0.01, z = math.random(-30,30)*0.01},
+			acceleration = {x = math.random(-50,50)*0.02, y = math.random(-20,20)*0.02, z = math.random(-50,50)*0.02},
+			expirationtime = 3,
+			size = math.random(6,20)*0.01,
+			collisiondetection = false,
+			object_collision = false,
+			vertical = false,
+			glow = math.random(0,minetest.LIGHT_MAX),
+			texture = "mcl_particles_nether_dust"..tostring(i%3+1)..".png",
+			playername = player:get_player_name()
+		})
+	end
+end
+
+local timer = 0
+minetest.register_globalstep(function(dtime)
+	timer = timer + dtime
+	if timer >= 0.7 then
+		timer = 0
+	else
+		return
+	end
+
+	for _, player in ipairs(minetest.get_connected_players()) do
+		if (mcl_weather.is_underwater(player) or not mcl_worlds.has_dust(player:get_pos())) then
+			return false
+		end
+		mcl_weather.nether_dust.add_dust_particles(player)
+	end
+end)
diff --git a/mods/ENVIRONMENT/mcl_weather/textures/mcl_particles_nether_dust1.png b/mods/ENVIRONMENT/mcl_weather/textures/mcl_particles_nether_dust1.png
new file mode 100644
index 00000000..25c71fba
Binary files /dev/null and b/mods/ENVIRONMENT/mcl_weather/textures/mcl_particles_nether_dust1.png differ
diff --git a/mods/ENVIRONMENT/mcl_weather/textures/mcl_particles_nether_dust2.png b/mods/ENVIRONMENT/mcl_weather/textures/mcl_particles_nether_dust2.png
new file mode 100644
index 00000000..73135f3b
Binary files /dev/null and b/mods/ENVIRONMENT/mcl_weather/textures/mcl_particles_nether_dust2.png differ
diff --git a/mods/ENVIRONMENT/mcl_weather/textures/mcl_particles_nether_dust3.png b/mods/ENVIRONMENT/mcl_weather/textures/mcl_particles_nether_dust3.png
new file mode 100644
index 00000000..876876d9
Binary files /dev/null and b/mods/ENVIRONMENT/mcl_weather/textures/mcl_particles_nether_dust3.png differ
diff --git a/mods/ITEMS/mcl_core/textures/default_obsidian.png b/mods/ITEMS/mcl_core/textures/default_obsidian.png
index 32b3371c..a7f1d889 100644
Binary files a/mods/ITEMS/mcl_core/textures/default_obsidian.png and b/mods/ITEMS/mcl_core/textures/default_obsidian.png differ
diff --git a/mods/ITEMS/mcl_portals/textures/mcl_portals_portal.png b/mods/ITEMS/mcl_portals/textures/mcl_portals_portal.png
index a24082b7..a47f4f4e 100644
Binary files a/mods/ITEMS/mcl_portals/textures/mcl_portals_portal.png and b/mods/ITEMS/mcl_portals/textures/mcl_portals_portal.png differ
diff --git a/tools/create_texture__mcl_portals_portal.py b/tools/create_texture__mcl_portals_portal.py
index f2b1e152..6f0725f6 100644
--- a/tools/create_texture__mcl_portals_portal.py
+++ b/tools/create_texture__mcl_portals_portal.py
@@ -1,7 +1,44 @@
 import png
-w, h = 64, 256;
+w, h = 16, 128;
 s = [[int(0) for c in range(w)] for c in range(h)] 
 
+def drawpixel(x, y, t):
+	if (x >= 0) and (x < w) and (y >= 0) and (y < h):
+		if(t == 1):
+			s[y][x] = 1
+		elif t==2:
+			s[y][x] = 1 - s[y][x]
+		elif t==3:
+			s[y][x] = s[y][x] + 1
+			if s[y][x] > 3:
+				s[y][x] =s[y][x]-4
+
+def circle(X1, Y1, R, t):
+	x = 0
+	y = R
+	delta = 1 - 2 * R
+	error = 0
+	while y >= 0:
+		if Y1%w + y < w:
+			drawpixel(X1 + x, Y1 + y, t)
+		if Y1%w - y >= 0:
+			drawpixel(X1 + x, Y1 - y, t)
+		if Y1%w + y < w:
+			drawpixel(X1 - x, Y1 + y, t)
+		if Y1%w - y >= 0:
+			drawpixel(X1 - x, Y1 - y, t)
+		error = 2 * (delta + y) - 1
+		if ((delta < 0) and (error <= 0)):
+			x = x + 1
+			delta = delta + 2 * x + 1
+		elif ((delta > 0) and (error > 0)):
+			y = y - 1
+			delta = delta - 2 * y + 1
+		else:
+			x = x + 1
+			y = y - 1
+			delta = delta + 2 * (x - y)
+
 def line(y1, x1, y2, x2, v):
 	signx = 1
 	signy = 1
@@ -19,10 +56,14 @@ def line(y1, x1, y2, x2, v):
 	if dx >= dy:
 		dir1 = 1
 	for i in range(max(dx, dy)+1):
-		if v==2:
-			s[x1][y1]=1-s[x1][y1]
-		else:
-			s[x1][y1] = v
+		if(v == 1):
+			s[x1][y1] = 1
+		elif v==2:
+			s[x1][y1] = 1 - s[x1][y1]
+		elif v==3 or (v==4 and ((x1^y1)&1)) or (v==5 and (((x1|y1)&1)==0)) or (v==7 and ((((x1+1)|y1)&1)==0)) or (v==8 and ((((x1+1)|(y1+1))&1)==0)) or (v==6 and (((x1|(y1+1))&1)==0)):
+			s[x1][y1] = s[x1][y1] + 1
+			if s[x1][y1] > 3:
+				s[x1][y1] = s[x1][y1] - 4
 		if dir1 == 1:
 			x1 += signx
 			offsy += dy
@@ -37,22 +78,37 @@ def line(y1, x1, y2, x2, v):
 				offsx -= dy
 
 # R, G, B, Alpha (0xFF = opaque):
-palette=[(0x00,0x00,0xaf,0xa0), (0x7f,0x0f,0xaf,0xb8)]
+palette=[
+	(0x30,0x03,0xaf,0xa4),
+	(0x4f,0x1c,0xaf,0xb4),
+	(0x7f,0x3d,0xa0,0xc8),
+	(0x6d,0x5d,0x99,0xb1)
+]
 
-for j in range(16):
-	i = j * 4
-	line(i, 0, 63-i, 63, 2)
-	line(63, i, 0, 63-i, 2)
-	i+=1
-	line(i, 64, 63-i, 127, 2)
-	line(63, 64+i, 0, 127-i, 2)
-	i+=1
-	line(i, 128, 63-i, 191, 2)
-	line(63, 128+i, 0, 191-i, 2)
-	i+=1
-	line(i, 192, 63-i, 255, 2)
-	line(63, 192+i, 0, 255-i, 2)
+circles = h//w
+maxr = w//2
+for i in [1,2,3,5,9,10,11,13]:
+	for c in range(circles):
+		q = ((circles-c-1)+i)%w
+		circle(maxr, maxr+c*w, q, 3)
 
-w = png.Writer(len(s[0]), len(s), palette=palette, bitdepth=1)
+
+linesperside = 2
+linestarts = round(w / linesperside) # 8
+lineoffset = round(w / linestarts) # 2
+wminus = w - 1
+
+for j in range(linesperside):
+	for k in range(linestarts):
+		offset = k * w
+		for q in [0,1,3,4]:
+#		for q in [1]:
+			i = j*linestarts + ((k+q)%linestarts)
+			line(i, offset, wminus-i, offset+wminus, 5+(k&3))
+			line(wminus, offset+i, 0, offset+wminus-i, 5+(k&3))
+
+
+
+w = png.Writer(len(s[0]), len(s), palette=palette, bitdepth=2)
 f = open('mcl_portals_portal.png', 'wb')
 w.write(f, s)
diff --git a/tools/create_texture__nether_dust.py b/tools/create_texture__nether_dust.py
new file mode 100644
index 00000000..f1b8e27f
--- /dev/null
+++ b/tools/create_texture__nether_dust.py
@@ -0,0 +1,25 @@
+import png
+
+s = [
+	[
+		'1',
+	],
+	[
+		'11',
+	],
+	[
+		'111',
+		'111',
+	],
+]
+
+# R, G, B, Alpha (0xFF = opaque):
+palette=[(0x00,0x00,0x00,0x00), (0x8F,0x69,0x66,0x9F)]
+#palette=[(0x00,0x00,0x00,0x00), (0xF0,0xF0,0xF0,0x80)]
+
+for i in range(0, len(s)):
+	print(str(i)+"/"+str(len(s)))
+	q = [[int(c) for c in row] for row in s[i]]
+	w = png.Writer(len(q[0]), len(q), palette=palette, bitdepth=1)
+	f = open('mcl_particles_nether_dust'+str(i+1)+'.png', 'wb')
+	w.write(f, q)