Board Thread:General Discussion/@comment-26415383-20170525022027/@comment-7971816-20170525143444

It was established that Clarke hasn't made contact with the bunker. Most likely, the buildings that collapsed block her from access, as she said something along those lines.

If it's mainly just her and Maddie, then that wouldn't be enough to dig them out, so Clarke will need reinforcements before she is able to get in touch with the bunker.