The shrine
In Netherstorm, south of the Arklon Ruins and west of Manaforge Coruu, is a small blue shrine only reachable by flying mount.
The shrine is a futuristic-looking draenei tombstone surrounded by pink crystals. On the tomb flashes the letters N, O, V, and A.
It is the memorial to the discontinued Starcraft: Ghost game. May it rest in peace.
Nova as a Blood elf
According to WoWInsider, Blizzard took a blood elf female and dressed her to make her look like Nova as possible with a full white 'ghost suit'. She was stealthed and sitting in front of the monument. She was added one month after Burning Crusaide was released, and removed from the game two months after release.
Comments by Drysc
Strange Blue Shrine Floating in Netherstorm | 2007-07-20 18:36 | 
Drysc
I close my eyes
Only for a moment, then the moment's gone
All my dreams
Pass before my eyes, a curiosity
Dust in the wind
All they are is dust in the wind...
Strange Blue Shrine Floating in Netherstorm | 2007-07-20 18:44 | Drysc