diff --git a/Maps.md b/Maps.md
index 30dcaf6..6976677 100644
--- a/Maps.md
+++ b/Maps.md
@@ -44,7 +44,7 @@ Index | Description
 | 0 | Type | `0bE?YY_YY?T` where E is vertical edge style (extra bit), T is terrain style (extra bit)
 | 4 | Slope | `0bEEES_SSSS` where E is the vertical edge style, S is slope
 | 5 | Terrain | `0bTTTW_WWWW` where T is terrain style, W is water height.
-| 6 | Grass Length | 0 to 6 (0 = Mowed, 1 = Clear, 4 = Clumps)
+| 6 | Grass Length | 0 to 6 (0 = Mowed, 1 = Clear, 4 = Clumped, 6 = Heavily clumped)
 | 7 | Ownership | `0bOOOO_FFFF` where O is ownership flags and F are park fence direction flags.
 
 ## Path Elements