Is that a big hill on top of the Mass Pike interchanges and railroad yards?
Yes it is. In fact there are two hills shown – a big one just south of the River Street Bridge, above the Mass Pike and railroad yards, and a smaller hill just north of River Street. In the drawing, each of the contour lines is ten feet higher than its outboard neighboring contour line. The smaller hill might be solid. The larger hill would be at least partly hollow – on top of a strong concrete ceiling built above the railroad yards and Mass Pike interchanges, so that all the existing transportation systems would remain where they are. The hills as drawn are not very steep – their northeastern slopes are shallow enough that a person in a wheelchair could go straight up the hill. The hill design could of course be far more interesting. The hills are proposed for the following reasons: • Digging this tunnel would create millions of cubic yards of dirt. This is where the dirt goes. • The hills would mean that the new Harvard campuses upon them would be visually connected with Harvard Squ
