diff --git a/pkg/atlas/atlas.go b/pkg/atlas/atlas.go
index 40969e1..6ec11e2 100644
--- a/pkg/atlas/atlas.go
+++ b/pkg/atlas/atlas.go
@@ -111,6 +111,8 @@ func (c *Chunk) populate(size int) {
 	for i := 0; i < len(c.Tiles); i++ {
 		if rand.Intn(16) == 0 {
 			c.Objects[i] = objects.Object{Type: objects.LargeRock}
+		} else if rand.Intn(32) == 0 {
+			c.Objects[i] = objects.Object{Type: objects.SmallRock}
 		}
 	}
 }
diff --git a/pkg/objects/objects.go b/pkg/objects/objects.go
index 126d0d1..9338b68 100644
--- a/pkg/objects/objects.go
+++ b/pkg/objects/objects.go
@@ -15,7 +15,7 @@ const (
 	SmallRock = Type('o')
 
 	// LargeRock is a large blocking rock
-	LargeRock = Type('o')
+	LargeRock = Type('O')
 )
 
 // Object represents an object in the world