How to get to the minecraft underworlds?

So I've been playing the game for a while now, and i've noticed a glitch in the game which is super creepy. In creative mode I start flying over land and some of the land doesn't load immediatley so i see a binch of weird rocky pathways underneath and sometimes even floating rooms and mobs. But when i fall to maybe enter this under world, the land appears underneath and the under world goes away. I tried digging to see if i could reach it (stupid idea) but obviously all I manage to reach is the Void. What is this underworld and can you get to it? If yes how? See the pic below
Thanks for your help and yes, I'm a girl, i play minecraft.

Recommend some good LAN games to play?

We live in a rural area, so anything that's only online/MMO is no go. Our favourite kinds of games are ones that can be played LAN, with bots co-op or VS.

Our main games we play are: Star Wars Battlefront 2

Payday 2

Killing Floor

Left 4 Dead 2 (Kinda, I don't really like it)

Sanctum 1 + 2

Rainbow Six Vegas 2

So any kind of games in that league. Nothing online, like DOTA or League of Legends, we can't play them. Not Civ 5, as we don't like it. Sorry we're so specific

Cheers,
Pietus

Added (1). Also, we play on PC

A Minecraft texture pack like this?

I know this is not actually a screenshot, it's just an artist's conception, but it looks really cool and i was wondering if anybody knew any texture packs/resource packs that look like this?

When playing Unturned and Minecraft my mouse acts funny with the clicking?

When playing "Unturned" and "Minecraft" my mouse acts funny with the clicking?

Added (1). It only clicks sometimes, maybe one out of every 5 clicks registers, and its only while playing games. Yesterday it was only doing that for "Unturned" now for "Minecraft" too and it works on the internet. I'm certain it's not from lag.

Added (2). Its a logitech wireless and it never did that before yesterday. Have had it for a year or more

I want a CREATIVE minecraft username, any ideas? - 1

Please READ THIS BEFORE COMMENTING BELOW;
First off, i'm a girl. I like fawns, pikas (not pikachu), and foxes. I would like a short and cute username, preferably with 'fawn' in it. I came up with: 'ItsFawn' but i feel as though it's a bit too plain. I also like watermelon, daises and nature (outdoorsy stuff). I would love if you are able to create a username with 'fawn' in it. Something short and sweet.

Where can i download the game Minecraft for my Samsung Mobile?

Where can i download the game "Minecraft" for my Samsung Mobile?

Laptop Help! Is this any good?

I've come to ask this question as i don't have a lot of knowledge when it comes to computing so i was wanting to know if the Asus X550CA-XX249H Laptop is any good, i use my computer mainly for these things: gaming (only minecraft, any idea of FPS I'd get?), Music and Work.

I've looked on PC world for this and they have it for a price of £379.99, is this a fare price, i've looked around and it seems to be, these are also the listed specifications from the site:
SPECIFICATION
ProcessorIntel® Core™ i5-3337U Processor (1.8 GHz, 2.7 GHz with TurboBoost, 3 MB cache)
RAM4 GB DDR3
Storage750 GB HDD, 5400 rpm

Link: http://www.pcworld.co.uk/...l#topdeals

I need a CREATIVE minecraft username?

Please READ THIS BEFORE COMMENTING BELOW;
First off, i'm a girl. I like fawns, pikas (not pikachu), and foxes. I would like a short and cute username, preferably with 'fawn' in it. I came up with: 'ItsFawn' but i feel as though it's a bit too plain. I also like watermelon, daises and nature (outdoorsy stuff). I would love if you are able to create a username with 'fawn' in it.

I want a creative minecraft username, any ideas?

I've been thinkning of some and nothing really stood out to me so i'm asking for help?
Things i love: fawns, pikas (google them they're so cute), i also like foxes. I'd liked my minecraft name to have either of these animals in them but i like fawns most!
i kinda like this one that i've created but i think it needs a little something more:
ItsFawn
you don't need to use 'itsfawn' its just an example of what i like. I like simple usernames that are cute and fun and creative. Make sure its original.
more things i like: nature, bunnies, daises and watermelon.

Name ideas for a floating town?

I'm building a floating town in Minecraft and want a good name for it. This can be anything from Highacre to Skylandia to Flutter. The more ideas, the better!