This is interesting...
According to the Huffington Post, "The apparent shrine, which appeared to once shelter a tree in its middle, was discovered beneath the sacred Maya Devi Temple in Lumbini, Nepal, one of four holy sites associated with Buddha's life. Buddhist tradition has long held that Buddha was born at Lumbini beneath a hardwood sal tree.
It's not impossible the newly discovered structure once surrounded the tree beneath which Buddha's mother, Queen Maya Devi, is believed to have given birth thousands of years ago, according to NBC News."
For more information, and an excellent suggested reading list about mindfulness and meditation ("making friends with your mind"), please see the article here. I definitely need to make friends with my mind!