Lower Blackrock Spire is a dungeon whose entrance is located in Searing Gorge in the World of Warcraft game. The minimum level for this dungeon is 58. The only achievements you can get in this dungeon are the ones for completing. There are no achievements awards for individual boss encounters for making him to do something. Classic raids and dungeons only had one mode and that was normal. Heroic level versions of the dungeon started in the Wrath of the Lich King expansion. Starting in Cataclysm and onwards, Heroic level dungeons were introduced for the highest level.The dungeon contains 16 bosses. The end boss of Lower Blackrock Spire is Overlord Wyrmthalak.
The Lower Blackrock Spire is a dungeon that was released from the beginning, that is Classic WOW. It is a dungeon that you access just before gaining the right to go Outlands. It is a very confusing place and people can easily get lost in there. If you are high enough, just go for the achievement of having done it then don't bother going back there.