The Colossus of Pythor is actually a hollow structure, but it is sealed and guarded. Unbeknownst to the Centurions of Mytros, Unknown  had tunneled up from the sewers. Her servants built a secret entrance into the interior of the great bronze statue, allowing her to use it as a base of operations. She was evicted when the The Heroes of Thylea broke into the statue but was able to escape without encountering them.