diff --git a/src/Data/Component.hs b/src/Data/Component.hs
index 73c9929..8e40969 100644
--- a/src/Data/Component.hs
+++ b/src/Data/Component.hs
@@ -89,4 +89,5 @@ data Decoration =
   | Ship Dir'
   | ShipSquare
   | LabeledArrow Dir' String
-
+  | Tent
+  | Tree
diff --git a/src/Draw/Component.hs b/src/Draw/Component.hs
index 415a60e..887fae1 100644
--- a/src/Draw/Component.hs
+++ b/src/Draw/Component.hs
@@ -9,7 +9,10 @@ import           Diagrams.Prelude        hiding ( dot
                                                 )
 
 import           Data.Component
-import           Data.Elements
+import           Data.Elements           hiding ( Tent
+                                                , Tree
+                                                )
+import qualified Data.Elements
 import           Data.Grid
 import           Data.GridShape
 import           Draw.Lib
@@ -95,4 +98,5 @@ drawDecoration d = case d of
   ShipSquare             -> shipSquare
   Ship dir               -> shipEnd dir
   LabeledArrow dir w     -> labeledArrow dir $ text' w
-
+  Tent                   -> draw tent
+  Tree                   -> drawTree Data.Elements.Tree
diff --git a/src/Draw/Elements.hs b/src/Draw/Elements.hs
index f5cef86..5b51935 100644
--- a/src/Draw/Elements.hs
+++ b/src/Draw/Elements.hs
@@ -308,28 +308,29 @@ drawTent (Tent d) = draw $ tent <> lwG linewidth (stroke conn)
       L -> (-1, 0)
     )
 
-  tent = fit 0.7 $ centerXY $ lwG 0 $ mconcat
-    [ rect 10 (1 / 4) # fc black
-    , shape [(-2, 0), (0, 4), (2, 0), (-2, 0)] # fc white
-    , shape [(-4, 0), (0, 8), (4, 0), (-4, 0)] # fc black
-    , shape
-        [ (0     , 8)
-        , (-1 / 2, 8 + 1)
-        , (-1    , 8 + 1 - 1 / 4)
-        , (0     , 8 + 1 - 1 / 4 - 2)
-        , (0     , 8)
-        ]
-      # fc black
-    , shape
-        [ (0    , 8)
-        , (1 / 2, 8 + 1)
-        , (1    , 8 + 1 - 1 / 4)
-        , (0    , 8 + 1 - 1 / 4 - 2)
-        , (0    , 8)
-        ]
-      # fc black
-    ]
-  shape = strokeLocLoop . fromVertices . map p2
+tent :: Backend' b => Diagram b
+tent = fit 0.7 $ centerXY $ lwG 0 $ mconcat
+  [ rect 10 (1 / 4) # fc black
+  , shape [(-2, 0), (0, 4), (2, 0), (-2, 0)] # fc white
+  , shape [(-4, 0), (0, 8), (4, 0), (-4, 0)] # fc black
+  , shape
+      [ (0     , 8)
+      , (-1 / 2, 8 + 1)
+      , (-1    , 8 + 1 - 1 / 4)
+      , (0     , 8 + 1 - 1 / 4 - 2)
+      , (0     , 8)
+      ]
+    # fc black
+  , shape
+      [ (0    , 8)
+      , (1 / 2, 8 + 1)
+      , (1    , 8 + 1 - 1 / 4)
+      , (0    , 8 + 1 - 1 / 4 - 2)
+      , (0    , 8)
+      ]
+    # fc black
+  ]
+  where shape = strokeLocLoop . fromVertices . map p2
 
 vertexLoop :: VertexLoop -> Located (Trail' Loop V2 Double)
 vertexLoop = mapLoc closeLine . fromVertices . map toPoint
diff --git a/src/Parse/Component.hs b/src/Parse/Component.hs
index b899273..2f5480b 100644
--- a/src/Parse/Component.hs
+++ b/src/Parse/Component.hs
@@ -5,7 +5,7 @@ module Parse.Component where
 import           Data.Yaml
 import qualified Data.Map.Strict               as Map
 
-import           Data.Elements
+import qualified Data.Elements                 as E
 import           Data.Component
 import           Data.Grid
 import           Data.GridShape
@@ -133,10 +133,10 @@ parseDecorationWithReplacements repl c = case Map.lookup c repl of
 parseDecoration :: Char -> Parser Decoration
 parseDecoration c = return $ case c of
   '.'  -> Blank
-  'o'  -> DecKropkiDot KWhite
-  '*'  -> DecKropkiDot KBlack
-  '/'  -> DarkDiagonal $ PrimeDiag (True, False)
-  '\\' -> DarkDiagonal $ PrimeDiag (False, True)
+  'o'  -> DecKropkiDot E.KWhite
+  '*'  -> DecKropkiDot E.KBlack
+  '/'  -> DarkDiagonal $ E.PrimeDiag (True, False)
+  '\\' -> DarkDiagonal $ E.PrimeDiag (False, True)
   '#'  -> Shade
   '-'  -> Edge Horiz
   '|'  -> Edge Vert
@@ -147,40 +147,43 @@ parseDecoration c = return $ case c of
 parseExtendedDecoration :: Util.IntString -> Parser Decoration
 parseExtendedDecoration (Util.IntString s) = case words s of
   [w1] -> case w1 of
-    "kropki-white"           -> pure $ DecKropkiDot KWhite
-    "kropki-black"           -> pure $ DecKropkiDot KBlack
-    "small-pearl-white"      -> pure $ SmallPearl MWhite
-    "small-pearl-black"      -> pure $ SmallPearl MBlack
-    "pearl-white"            -> pure $ Pearl MWhite
-    "pearl-black"            -> pure $ Pearl MBlack
-    "blank"                  -> pure Blank
-    "afternoon-west"         -> pure $ AfternoonWest
-    "afternoon-south"        -> pure $ AfternoonSouth
-    "light-diagonal-forward" -> pure $ LightDiagonal $ PrimeDiag (True, False)
-    "light-diagonal-back"    -> pure $ LightDiagonal $ PrimeDiag (False, True)
-    "light-diagonal-both"    -> pure $ LightDiagonal $ PrimeDiag (True, True)
-    "dark-diagonal-forward"  -> pure $ DarkDiagonal $ PrimeDiag (True, False)
-    "dark-diagonal-back"     -> pure $ DarkDiagonal $ PrimeDiag (False, True)
-    "dark-diagonal-both"     -> pure $ DarkDiagonal $ PrimeDiag (True, True)
-    "edge-horiz"             -> pure $ Edge Horiz
-    "edge-vert"              -> pure $ Edge Vert
-    "thin-edge-horiz"        -> pure $ ThinEdge Horiz
-    "thin-edge-vert"         -> pure $ ThinEdge Vert
-    "sol-edge-horiz"         -> pure $ SolEdge Horiz
-    "sol-edge-vert"          -> pure $ SolEdge Vert
-    "dot"                    -> pure $ Dot
-    "small-dot"              -> pure $ SmallDot
-    "shade"                  -> pure $ Shade
-    "light-shade"            -> pure $ LightShade
-    "triangle-right"         -> pure $ TriangleRight
-    "triangle-down"          -> pure $ TriangleDown
-    "miniloop"               -> pure $ MiniLoop
-    "ship-square"            -> pure $ ShipSquare
-    "ship-end-left"          -> pure $ Ship R
-    "ship-end-right"         -> pure $ Ship L
-    "ship-end-top"           -> pure $ Ship D
-    "ship-end-bottom"        -> pure $ Ship U
-    _                        -> pure $ Letters s
+    "kropki-white"      -> pure $ DecKropkiDot E.KWhite
+    "kropki-black"      -> pure $ DecKropkiDot E.KBlack
+    "small-pearl-white" -> pure $ SmallPearl E.MWhite
+    "small-pearl-black" -> pure $ SmallPearl E.MBlack
+    "pearl-white"       -> pure $ Pearl E.MWhite
+    "pearl-black"       -> pure $ Pearl E.MBlack
+    "blank"             -> pure Blank
+    "afternoon-west"    -> pure $ AfternoonWest
+    "afternoon-south"   -> pure $ AfternoonSouth
+    "light-diagonal-forward" ->
+      pure $ LightDiagonal $ E.PrimeDiag (True, False)
+    "light-diagonal-back"   -> pure $ LightDiagonal $ E.PrimeDiag (False, True)
+    "light-diagonal-both"   -> pure $ LightDiagonal $ E.PrimeDiag (True, True)
+    "dark-diagonal-forward" -> pure $ DarkDiagonal $ E.PrimeDiag (True, False)
+    "dark-diagonal-back"    -> pure $ DarkDiagonal $ E.PrimeDiag (False, True)
+    "dark-diagonal-both"    -> pure $ DarkDiagonal $ E.PrimeDiag (True, True)
+    "edge-horiz"            -> pure $ Edge Horiz
+    "edge-vert"             -> pure $ Edge Vert
+    "thin-edge-horiz"       -> pure $ ThinEdge Horiz
+    "thin-edge-vert"        -> pure $ ThinEdge Vert
+    "sol-edge-horiz"        -> pure $ SolEdge Horiz
+    "sol-edge-vert"         -> pure $ SolEdge Vert
+    "dot"                   -> pure $ Dot
+    "small-dot"             -> pure $ SmallDot
+    "shade"                 -> pure $ Shade
+    "light-shade"           -> pure $ LightShade
+    "triangle-right"        -> pure $ TriangleRight
+    "triangle-down"         -> pure $ TriangleDown
+    "miniloop"              -> pure $ MiniLoop
+    "ship-square"           -> pure $ ShipSquare
+    "ship-end-left"         -> pure $ Ship R
+    "ship-end-right"        -> pure $ Ship L
+    "ship-end-top"          -> pure $ Ship D
+    "ship-end-bottom"       -> pure $ Ship U
+    "tent"                  -> pure $ Tent
+    "tree"                  -> pure $ Tree
+    _                       -> pure $ Letters s
   [w1, w2] -> case w1 of
     "triangle-right" -> pure $ LabeledTriangleRight w2
     "triangle-down"  -> pure $ LabeledTriangleDown w2
diff --git a/tests/examples/snake-forest-example.png b/tests/examples/snake-forest-example.png
new file mode 100644
index 0000000..df0ca69
Binary files /dev/null and b/tests/examples/snake-forest-example.png differ
diff --git a/tests/examples/snake-forest-example.pzg b/tests/examples/snake-forest-example.pzg
new file mode 100644
index 0000000..6c537d8
--- /dev/null
+++ b/tests/examples/snake-forest-example.pzg
@@ -0,0 +1,37 @@
+
+- type: cells
+  grid: |
+    B...
+    O...
+  substitute:
+    O: pearl-black
+    B: tree
+- type: cells
+  tag: solution
+  grid: |
+    .Z.#
+    ####
+  substitute:
+    Z: tent
+- type: cells
+  tag: solution
+  grid: |
+    ...O
+    O...
+  substitute:
+    O: pearl-black
+- type: edges
+  tag: solution
+  grid: |
+    o o o o o
+      -
+    o o o o o
+
+    o o o o o
+  substitute:
+    o: .
+- type: grid
+  style: default
+  grid: |
+    ....
+    ....