Citation: http://www.straitstimes.com/breaking-news/singapore/story/downtown-line-costs-soar-more-70-20121030
I wonder why the route of Downtown line has been changed many times．
Basically, most of the line would be underground．So, all of what should be considered is whether there
is no obstacle such as ruins．But, when we remember the history of Singapore, no ruins would be buried underground．
