The Underground and You - Guide for Pokemon Pearl

1. Introduction

2. How to get there

3. Time to explore-all the info

4. Fun with friends

5. Closing

          1. Introduction

          The Underground is a broad and complex tunnel which is underneath the 
entire Sinnoh region, including the Fight, Survival, and Resort Areas.  You 
will need the Explorer Kit, which contains some useful stuff, before you can go 
there.

          2. How to get there

          First, press X (I'm going by the default control setting), then go to 
the Key Items pocket and select Explorer Kit (if you set it for instant use 
with the Y Button, just press Y).  It will say "DS Wireless Communications will 
be launched."  Select yes then save the game.

          3. Time to explore-all the info

          The touch screen is the one you will be looking at the most.  The top 
screen is the radar.  When you see chunks of yellow-orange stuff, that's where 
treasure is!  Use the touch screen to find out where they are.  Then, face the 
wall and press A.  You will see the message, "The wall is bulging slightly.  
Try digging into it?"  Select yes.  Each wall is different.  You will see 
whatever comes up.  You have a pickax and a sledgehammer.  Select one of the 
tools to use and start digging.  You can find some awesome stuff in there like 
Revives, Fossils, and Everstones.  You can also find spheres which you can 
trade for goodies, traps, and more.  Bury spheres and they will grow into a 
larger size than they where in the past.  Press X and you will see the 
following list of options:  Traps, Spheres, Goodies, Treasures, your 
character's name (I named mine Jerry), Go Up, and Exit.  Traps:  Shows the 
traps you have.  Select one you want to palce, then press A on bury to bury it 
in front of you.  Spheres:  Shows the spheres you have.  You can bury or throw 
them away.  Treasures:  Shows the treasures you have.  Unlike the other two 
options, this one says Put in Bag or throw away.  You will mostly get items 
like Fossils.  Your character's name (it won't really say this):  Shows how 
many shperes and fossils you dug up, your current score, and so on.  Go Up: 
Returns you to the surface.  No matter where you are, you will always return to 
the place you entered.  Exit:  Does what it says; exits the menu.  Secret 
Base:  Just like Ruby and Sapphire,  decorate your own Secret Base.  First, 
obtain a Digger Drill.  Then,  face any wall and use it.  You can use the 
Goodies you have to decorate it any way you like.

          4. Fun with friends

          Up to eight players can be in the Underground at one time.  You can 
have lots of fun such as a little race to get to a wall first or setting traps 
for some laughs.  Remember, it's not about competition;  it's about having fun. 
Now go for it!

          5. Closing

          Now you know all about the Underground and how it works.  If you want 
to print out this or my last guide,  feel free to do so.  Just don't copy it.  
See ya!

P.S.:  The Digger Drill is good for one use only, so think carefully.