I made this map and this list for my Item list research, but I think it can stand alone in its own thread.
If need be, we can branch it out into a more general "underground" thread, but for now, this is what I have.
The Map
Every red square represents a hiker who will either sell you items for gems, or will buy the overworld items you've dug up in exchange for gems. As you can see, there are twenty hikers there.
Traps
A big part of the underground is digging for items and finding traps. Thanks to my item faq (link to topic in my sig) I've compiled a beginning list of the traps you can find underground, what they do, and what can be done to counteract their effect. As I find more, I'll list them here.
Explanation of the areas in your bag, and what they do
1. The top item - This is for traps. If you have traps in your bag, you can access them here. There are a couple of different ways of getting traps, but I'll go into that in a minute. First, this is what happens when you select one from your bag.
-three options. First one - Bury. Second one - throw away. Third one - stop. The first one allows you to "set" the trap by burying it. You'll know where you buried it, because you'll see a marker for it above ground - a square shape. Don't step on it, lol. The second option will let you throw away the trap. This is useful if your trap bag is full and you want to put different ones in. The third option lets you exit that menu.
Now then. You can get traps two different ways (that I know of). One, you can pick them up off the ground. You can see the little sparklies on the ground if you touch the touch screen when one's nearby. If you want to pick up a trap (a good idea if you want to avoid stepping on it) simply stand next to it and hit A while facing it. Another way to get traps is to buy them from the hikers. I have a guide to the underground that can tell you where those hikers are.
2. The second menu item is your gem pouch. This holds all the gems you pick up, but it can only carry so much. When you collect gems you've dug up, it won't automatically add them to a collection of that kind. You have to actually combine them together. Unfortunately, this process causes you to lose a lot of gems, but it's the only way to save space in your pack. Also, when you buy from the hikers, they won't accept more than one pile of gems as payment; it all has to be one lump sum. That's important to keep in mind.
To combine the gems, select one of them, and you'll be faced with the same menu options that you had for the traps. You can bury, throw away, or stop. To combine your gems, you need to bury one after the other. Don't worry about accidentally mixing two different colors together; it won't let you do it. Anyway, after you've buried all your gems of one color in the same spot, just exit the menus and hit A, and you'll pick them up, this time with them being in one pile. Like I said, you lose a lot of gems this way, but it's just the nature of the beast.
3. The third option is your "Goods" bag. This is all of the items you carry to furnish your secret base with. Things like dolls, furniture, cushions, etc. You only have two menu options with these - throw away and stop. You can only carry ten of these items at any one time, so you may need to throw some away, if you don't want to sell them to hikers. Until you actually make your secret base, you won't have any other options.
4. Your fourth menu item is your "Treasure" bag. These are all the overworld items you've dug up. Things like fossils, elemental stones, heart scales, etc. This menu has three options for the items - "Put in the bag," throw away, and stop. The first option is what you'll be using the most.
This is how you transfer these items from your treasure bag underground, to your pack aboveground. The other two are self-explanatory.
5. This is your trainer card. There are a variety of things on here that I've never looked at before, so bear with me. I'll put them in order as they come, from left to right, and up to down.
- Name
- ID
- Score
- Number of people encountered
- Number of goods given
- Number of flags stolen
- Number of fossils dug (found)
- Number of traps set
6. This option is to return you to the overworld. If you choose this, it will ask you if you really want to return. The first option is yes, and the second is no.
7. The last option is "end."
There you have it. Those are all the menu options, and what they do.
The Map

Every red square represents a hiker who will either sell you items for gems, or will buy the overworld items you've dug up in exchange for gems. As you can see, there are twenty hikers there.
Traps
A big part of the underground is digging for items and finding traps. Thanks to my item faq (link to topic in my sig) I've compiled a beginning list of the traps you can find underground, what they do, and what can be done to counteract their effect. As I find more, I'll list them here.
Code:
================================================================================
Name Effect Remedy
================================================================================
Boulder Trap Drops a huge boulder in your Repeatedly touch the boulder
path. with the stylus to break it
apart.
--------------------------------------------------------------------------------
Bubble Trap Creates a multitude of Break each bubble by touching
bubbles to block your path. it with the stylus.
--------------------------------------------------------------------------------
Confusion Trap Causes your character to Keep moving until it passes.
ignore orders and move
randomly.
--------------------------------------------------------------------------------
Deep Hole Trap Creates a deep, soggy hole Repeatedly change direction
for you to stick in. rapidly to break free.
--------------------------------------------------------------------------------
Ember Trap Creates a small fireball to Blow in the mic to clear the
block your path. fire away.
--------------------------------------------------------------------------------
Foam Trap Creates a few bubbles to Break each bubble by touching
block your path. it with the stylus.
--------------------------------------------------------------------------------
Hole Trap Creates a soggy hole for you Repeatedly change direction
to stick in. rapidly to break free.
--------------------------------------------------------------------------------
Leaf Trap Covers your vision with Blow in the mic to clear the
leaves. leaves away.
--------------------------------------------------------------------------------
Move Down Trap Sends you zooming downwards Wait for it to pass.
for a short distance.
--------------------------------------------------------------------------------
Move Left Trap Sends you zooming left Wait for it to pass.
for a short distance.
--------------------------------------------------------------------------------
Move Right Trap Sends you zooming right Wait for it to pass.
for a short distance.
--------------------------------------------------------------------------------
Move Up Trap Sends you zooming upwards Wait for it to pass.
for a short distance.
--------------------------------------------------------------------------------
Petal Dance Trap Covers your path with Blow in the mic to clear the
petals. petals away.
--------------------------------------------------------------------------------
Reversal Trap Reverses the directional Walk for a while until it
controls for a short passes. It won't pass without
distance. distance.
--------------------------------------------------------------------------------
Rock Trap Drops a cracked rock in your Repeatedly touch the rock with
path. the stylus to break it apart.
--------------------------------------------------------------------------------
Sign Trap 1 Causes you to pause for a Wait for it to pass.
moment, and flashes a
message on the top screen
that reads, "Hello! Nice to
meet you!"
--------------------------------------------------------------------------------
Sign Trap 2 Causes you to pause for a Wait for it to pass.
moment, and flashes a
message on the top screen
that reads, "Goodbye! I have
to return to the surface!"
--------------------------------------------------------------------------------
Sign Trap 3 Causes you to pause for a Wait for it to pass.
moment, and flashes a
message on the top screen
that reads, "Let's go to the
Union Room!"
--------------------------------------------------------------------------------
Speed Down Trap Sends you zooming downwards. Wait for it to pass.
Moves farther than the Move
traps.
--------------------------------------------------------------------------------
Speed Left Trap Sends you zooming left. Wait for it to pass.
Moves farther than the Move
traps.
--------------------------------------------------------------------------------
Speed Right Trap Sends you zooming right. Wait for it to pass.
Moves farther than the Move
traps.
--------------------------------------------------------------------------------
Speed Up Trap Sends you zooming upwards. Wait for it to pass.
Moves farther than the Move
traps.
--------------------------------------------------------------------------------
Explanation of the areas in your bag, and what they do
1. The top item - This is for traps. If you have traps in your bag, you can access them here. There are a couple of different ways of getting traps, but I'll go into that in a minute. First, this is what happens when you select one from your bag.
-three options. First one - Bury. Second one - throw away. Third one - stop. The first one allows you to "set" the trap by burying it. You'll know where you buried it, because you'll see a marker for it above ground - a square shape. Don't step on it, lol. The second option will let you throw away the trap. This is useful if your trap bag is full and you want to put different ones in. The third option lets you exit that menu.
Now then. You can get traps two different ways (that I know of). One, you can pick them up off the ground. You can see the little sparklies on the ground if you touch the touch screen when one's nearby. If you want to pick up a trap (a good idea if you want to avoid stepping on it) simply stand next to it and hit A while facing it. Another way to get traps is to buy them from the hikers. I have a guide to the underground that can tell you where those hikers are.
2. The second menu item is your gem pouch. This holds all the gems you pick up, but it can only carry so much. When you collect gems you've dug up, it won't automatically add them to a collection of that kind. You have to actually combine them together. Unfortunately, this process causes you to lose a lot of gems, but it's the only way to save space in your pack. Also, when you buy from the hikers, they won't accept more than one pile of gems as payment; it all has to be one lump sum. That's important to keep in mind.
To combine the gems, select one of them, and you'll be faced with the same menu options that you had for the traps. You can bury, throw away, or stop. To combine your gems, you need to bury one after the other. Don't worry about accidentally mixing two different colors together; it won't let you do it. Anyway, after you've buried all your gems of one color in the same spot, just exit the menus and hit A, and you'll pick them up, this time with them being in one pile. Like I said, you lose a lot of gems this way, but it's just the nature of the beast.
3. The third option is your "Goods" bag. This is all of the items you carry to furnish your secret base with. Things like dolls, furniture, cushions, etc. You only have two menu options with these - throw away and stop. You can only carry ten of these items at any one time, so you may need to throw some away, if you don't want to sell them to hikers. Until you actually make your secret base, you won't have any other options.
4. Your fourth menu item is your "Treasure" bag. These are all the overworld items you've dug up. Things like fossils, elemental stones, heart scales, etc. This menu has three options for the items - "Put in the bag," throw away, and stop. The first option is what you'll be using the most.
5. This is your trainer card. There are a variety of things on here that I've never looked at before, so bear with me. I'll put them in order as they come, from left to right, and up to down.
- Name
- ID
- Score
- Number of people encountered
- Number of goods given
- Number of flags stolen
- Number of fossils dug (found)
- Number of traps set
6. This option is to return you to the overworld. If you choose this, it will ask you if you really want to return. The first option is yes, and the second is no.
7. The last option is "end."
There you have it. Those are all the menu options, and what they do.
Last edited: