The Sodor & Mainland Railway town of Ballahoo via Rolf's Castle and Crovan's Gate, but never actually reached the mainland due to lack of money and misfortunes. The plan to extend to the Mainland via Vicarstown failed when the tunnel under construction through the Balahoo Ridge collapsed and plans to build a bridge across the Walney Channel was halted by the Admiralty (who ironically in World War I became the driving force behind the unification of Sodor's railways and completion of the same link to the mainland that they hindered the S&M in building). The S&M did, at one time plan to build a western
Lagos Colony center with a population over 60,000. In the aftermath of prolonged wars between the mainland Yoruba states, the colony established a protectorate over most of Yorubaland between 1890 and 1897. The colony and protectorate were incorporated into Southern Nigeria in February 1906, and Lagos became the capital of the protectorate of Nigeria in January 1914. Since then, Lagos has grown to become the largest city in West Africa, with an estimated metropolitan population of over 9,000,000 as of 2011. Lagos was originally a fishing community on the north of Lagos Island, which lies in Lagos Lagoon, a large protected harbour