diff --git a/js/format-c2g.js b/js/format-c2g.js
index c1376f3..63b15e3 100644
--- a/js/format-c2g.js
+++ b/js/format-c2g.js
@@ -808,6 +808,10 @@ const TILE_ENCODING = {
         has_next: true,
         is_extension: true,
     },
+    0xd5: {
+        name: 'spikes',
+        is_extension: true,
+    },
     0xe0: {
         name: 'gift_bow',
         has_next: true,
diff --git a/js/main-editor.js b/js/main-editor.js
index bbb9d08..e5f2a6d 100644
--- a/js/main-editor.js
+++ b/js/main-editor.js
@@ -1608,7 +1608,8 @@ const EDITOR_PALETTE = [{
         'hole',
         'cracked_floor',
         'cracked_ice',
-        'score_5x'
+        'score_5x',
+        'spikes'
     ],
 }];
 
@@ -2227,6 +2228,10 @@ const EDITOR_TILE_DESCRIPTIONS = {
         name: "×5 bonus",
         desc: "Quintuples the player's current bonus points.  Can be collected by doppelgangers, rovers, and bowling balls, but will not grant bonus points.",
     },
+    spikes: {
+        name: "Spikes",
+        desc: "Stops players (and doppelgangers) unless they have hiking boots. Everything else can pass.",
+    },
 };
 
 const SPECIAL_PALETTE_ENTRIES = {
diff --git a/js/tileset.js b/js/tileset.js
index 3f3648a..0168201 100644
--- a/js/tileset.js
+++ b/js/tileset.js
@@ -1063,6 +1063,7 @@ export const LL_TILESET_LAYOUT = Object.assign({}, CC2_TILESET_LAYOUT, {
     cracked_floor: [11, 43],
     cracked_ice: [7, 40],
     score_5x: [10, 40],
+    spikes: [5, 40],
 });
 
 export const TILESET_LAYOUTS = {
diff --git a/js/tiletypes.js b/js/tiletypes.js
index fc23969..b6b3890 100644
--- a/js/tiletypes.js
+++ b/js/tiletypes.js
@@ -687,6 +687,12 @@ const TILE_TYPES = {
         blocks_collision: COLLISION.block_cc1 | COLLISION.block_cc2,
         speed_factor: 0.5,
     },
+    spikes: {
+        layer: LAYERS.terrain,
+        blocks(me, level, other) {
+            return !(!other.type.is_player || other.has_item('hiking_boots'));
+        },
+    },
     fire_sticks: {
         layer: LAYERS.terrain,
         blocks_collision: COLLISION.block_cc1 | (COLLISION.monster_solid & ~COLLISION.rover & ~COLLISION.fireball),