Mount Anthor

Mount Anthor's history can be traced back to the First Era, when King Olaf One-Eye subdued the great dragon Numinex in a legendary duel of Thu’ums, and brought him back to the fledgling town of Whiterun as a captive. It was then that the magnificent keep of Dragonsreach was rebuilt and renamed to serve as a cage for Numinex, whose head still adorns the Great Hall.

Mount Anthor is a location that can be found in the Northeast area of Skyrim. It is in the last batch of mountains Northeast before you start heading into no mans land. It is Southwest from Winterhold. It is a bit of a pain to get there, have to pretty much circle around the mountain. You will probably pass by the Statue of Azura on your ways there. By climbing higher up the mountain will eventually reach Mount Anthor summit.

Quests
Malur Seloth of Winterhold will offer you a quest to kill the dragon that inhabits Mount Anthor. Killing the beast will earn you 500 gold.

Because of the unique location of the perched dragon, it is entirely possible to sneak up and around past it so that you approach from it's rear. From here you can actually sneak down the mountain peak and onto the stone structure the dragon is perched upon and perform a sneak attack. It's entirely possible to 1 hit kill the dragon with the right combination of skills, perks and enchanted attire - namely the Assassin's Blade perk (x15 damage from sneak attack) from the Sneak tree and Shrouded Gloves (x2 sneak damage from 1 handed weapons) obtained from the Dark Brotherhood. This combination would allow for a huge 30x damage multiplyer. Even a lowly Iron Dagger can be enough to fell the beast. Note that the dragon is sometimes an elder dragon. Using the above skills and equipment i still only managed to take about a quarter of its health down. also should the dragon not die you are in for a difficult fight with a high likelihood of a gravity induced death.

Note - This site of a dragon is given to the player through them receiving a letter from, A Friend, explaining that he was impressed by the player's use of a Thu'um at Fort Greymoor, and that Mount Anthor is a sight of power unlocked only by a dragon born.