Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: It may be hard to imagine now but at the start of the 20th Century much of Stonehenge was propped up with wooden poles and parts were in danger of collapse.

Stonehenge: A ruin to a treasure in 100 years of public ownership