The term underground railroad is identified in base64 scheme by the sequence dW5kZXJncm91bmQgcmFpbHJvYWQ=, while the MD5 signature is equal to 922ef18abf972ed454ade973864ed05c. The ASCII encoding of underground railroad in hexadecimal notation is 756e64657267726f756e64207261696c726f6164.