You simply tap the rock. An option will come up to clear it. It costs coins to clear them. The bigger the rock, the more the cost.
There is no dragonvale for PC
You don't really beat levels in DragonVale. You just get enough experience points to pass to the next one. You get experience points by clearing rocks and trees, buying decorations, breeding new dragons, and a few other actions.
The type of rocks that are in the Clear Lake Volcano are molten rocks. Its primary volcano type is volcanic field. There is no evidence of the last eruption.
DragonVale does not have redeem codes.
DragonVale is sometimes referred to as DV.
No you can't sell the Nursery on DragonVale.
DragonVale is a free download in the Apple App Store.
There is no such thing as a Birthstone Dragon on DragonVale
Online is the only way to play Dragonvale!
No, DragonVale is only available for iOS devices.
Yes, you must be online to play DragonVale.
Many people like DragonVale. I honestly love DragonVale.