Top Definition
This term is derived from the root words gnar gnar & Narnia. Gnar being that of freshly laden snow, typically in the form of soft powder which is ideal for skiing, and Narnia being a mythical land from the mind of C.S. Lewis' novel, The Chronicles of Narnia. The combination of words creates "Gnarnia," a sought after, magical place in which the landscape is so perfect for shredding that it is nearly surreal.
"Dude, the conditions on Schweitzer were so flawless today. I thought I had stumbled into Gnarnia."
by plaidpaladin25 December 23, 2008
The place where you go to ski or snowboard (ski hill). its a play on words. gnar is snow. really, it just sounds cool.

its a mystical place where you shred :P
"Hey, are you going to gnarnia after school?"

"Ya man, I'll see you there!"
by erik74 December 02, 2008
A magical land that can only be reached by smoking pot. By awesome people.
"Dude you wanna go to G-narnia this weekend with Alek?"
" I would love to, but this faggot won't stop riding my asshole."
"Oh, ok..... Im gonna go have oral sex with Noah's mother."
by Naught Narnian December 26, 2007
Whistler Mountain Bike Park... The best Mountain Bike Park on the planet. Especially the Garbanzo Zone...Garbanzo is so steep, technical, and rocky that it is a permanently closed area once the snow arrives. I.e. it is closed to ski/snowboarding in the winter... it puts the Gnar in Gnarnia
The snow is melting in Gnarnia... soon we will rip Goats Gully, Freight Train, and O-Sin!
by cmacowboy June 20, 2010
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