+-+
| |
+ + +-+ |
| /| |
+--+--+ +--+--+ +
+ | | |\ +
| + +--+ + v|
x | /| / +--+
+ + + + a<-+--+ |
| | \ ^ |
+ b + \ | |
| ^ | \ | |
+ | +--+--+ \| |
\| \ a |
+ 1 |
|\ |
| \ +-----------+--+--+--+--+--+
| \| | | | |
| +-+ + + + +
v
+--+--+--+--+--b--+--+->+
1 = Hoan Dor Forest {5-10}
Here is the universal key.