diff --git a/code/__DEFINES/icon_smoothing.dm b/code/__DEFINES/icon_smoothing.dm
index ff27bbd65dc..63a7b2b2f93 100644
--- a/code/__DEFINES/icon_smoothing.dm
+++ b/code/__DEFINES/icon_smoothing.dm
@@ -219,6 +219,8 @@ DEFINE_BITFIELD(smoothing_junction, list(
 #define SMOOTH_GROUP_PLATFORMS_PIZZA S_OBJ(85) ///obj/structure/platform/pizza
 #define SMOOTH_GROUP_PLATFORMS_PAPER S_OBJ(86) ///obj/structure/platform/paper
 
+#define SMOOTH_GROUP_BOULDER_PLATFORM S_OBJ(89) ///obj/structure/lattice/catwalk/boulder
+
 /// Performs the work to set smoothing_groups and canSmoothWith.
 /// An inlined function used in both turf/Initialize and atom/Initialize.
 #define SETUP_SMOOTHING(...) \
diff --git a/code/game/objects/structures/lattice.dm b/code/game/objects/structures/lattice.dm
index 34279684ce1..4791a50f6fe 100644
--- a/code/game/objects/structures/lattice.dm
+++ b/code/game/objects/structures/lattice.dm
@@ -196,12 +196,11 @@
 /obj/structure/lattice/catwalk/boulder
 	name = "boulder platform"
 	desc = "A boulder, floating on the molten hot deadly lava. More like a BOATlder."
-	icon = 'icons/obj/ore.dmi'
-	icon_state = "boulder_platform"
+	icon = 'icons/obj/smooth_structures/boulder_platform.dmi'
+	icon_state = "boulder_platform-0"
 	base_icon_state = "boulder_platform"
-	smoothing_flags = NONE
-	smoothing_groups = null
-	canSmoothWith = null
+	smoothing_groups = SMOOTH_GROUP_BOULDER_PLATFORM
+	canSmoothWith = SMOOTH_GROUP_BOULDER_PLATFORM + SMOOTH_GROUP_FLOOR_LAVA
 	build_material = null
 	/// The type of particle to make before the platform collapses.
 	var/warning_particle = /particles/smoke/ash
@@ -224,10 +223,9 @@
 	. = ..()
 
 /obj/structure/lattice/catwalk/boulder/proc/pre_self_destruct()
-	if(istype(loc, /turf/open/lava/plasma))
-		add_overlay("plasma_cracks")
-	else
-		add_overlay("lava_cracks")
+	var/mutable_appearance/cracks_overlay = mutable_appearance('icons/obj/ore.dmi', istype(loc, /turf/open/lava/plasma) ? "plasma_cracks" : "lava_cracks", src)
+	cracks_overlay.blend_mode = BLEND_INSET_OVERLAY
+	add_overlay(cracks_overlay)
 	animate(src, alpha = 0, time = 2 SECONDS, pixel_y = -16, easing = QUAD_EASING|EASE_IN)
 	addtimer(CALLBACK(src, PROC_REF(self_destruct)), 2 SECONDS)
 
diff --git a/icons/obj/ore.dmi b/icons/obj/ore.dmi
index 5346161a9e7..81a7cb03fdf 100644
Binary files a/icons/obj/ore.dmi and b/icons/obj/ore.dmi differ
diff --git a/icons/obj/smooth_structures/boulder_platform.dmi b/icons/obj/smooth_structures/boulder_platform.dmi
new file mode 100644
index 00000000000..34c99f2dd5c
Binary files /dev/null and b/icons/obj/smooth_structures/boulder_platform.dmi differ
diff --git a/icons/obj/smooth_structures/boulder_platform.png b/icons/obj/smooth_structures/boulder_platform.png
new file mode 100644
index 00000000000..ac31e2b79be
Binary files /dev/null and b/icons/obj/smooth_structures/boulder_platform.png differ
diff --git a/icons/obj/smooth_structures/boulder_platform.png.toml b/icons/obj/smooth_structures/boulder_platform.png.toml
new file mode 100644
index 00000000000..9bc68fe5cd5
--- /dev/null
+++ b/icons/obj/smooth_structures/boulder_platform.png.toml
@@ -0,0 +1,2 @@
+output_name = "boulder_platform"
+template = "bitmask/diagonal_32x32.toml"