down hill and mountain biking

How many of us ride at fast speeds? or go mountain biking?
this is one thing that I love doing, I tend to ride my trek with 29'' tires around 30 miles per just for fun. i do alot of mountain biking because here in lakewood colorado we have really great trails
I love riding up steep hills because it takes way more effort and has made me way stronger that i used to be. Here is a pic from the top of a small mountain a couple miles away from my house, in the back ground is my little brother Austin, and a little further into the back ground is Denver Colorado

that trail was really muddy on tuesday when we road together, here is a pic of my bike when we got to the top



here a nice pic from the top of the hill we road just before the sun set for the night

Me and my bro' road today with my awesome uncle, road to the top of a long steep hill then to a relative's house then bombed down a hill... I was going at least 40mph because i was going faster than the red car behind me. I got to the bottom and realized that my rear brake was completely burned up from stopping! Stupid e decided to see if it was hot...

here is what the disk brake is supposed to look like...

here is the brake now...

it did not feel good when i touched it lol, im just glad the burn is not worse and i did not crash and skin my self up

so my question is, who here rides mountain bikes. If you do, post your pics of your bikes. Im sure we would like to see the different ones that people ride