Echidnaopolis

Echidnaopolis was the second largest Echidna settlement on the planet Mobius located on Angel Island. The city was originally located in the continent of Downunda but when a White Comet threatened to destroy it, the scientific elite at the time proposed the idea of using the power of the Chaos Emeralds to lift their city above ground and avoid destruction. The plan worked, and since then Echidnaopolis had remained airborne along with Angel Island. The city has been a hotspot for numerous conflicts, between the Brotherhood of Guardians and the Dark Legion, as well as with the Dingo Regime and the Eggman Empire. When the Dingoes sided with the Eggman Empire and received technological and military support, the city was overrun and destroyed. In its former place the Dingo City Cavem Canus was built. The few free Echidnas on the island managed to build a primitive village elsewhere on the island also named Echidnaopolis after their once great city.

Voyage from Albion
Many years ago, a group of Echidnas departed from the Echidna city of Albion in search of new adventures and land. The pioneers first came to a continent in the Southern Hemisphere where they began to colonize. Shortly afterwards however they discovered they had attempted to settle in the Mysterious Cat Country. Soon, the Cat People and the Echidna settlers became engaged in a war. The Knuckles Tribe wanted to remain and fight for their new land, while the scientific elite and intellectuals wanted no part of the conflict. Thus, the latter left on their ships to find a new land, while the Knuckles Tribe remained behind to continue their war with the Cat People. The scientists travelled to the continent of Downunda where they began colonization and the created Echidnaopolis. (StH: #82, KtE: #12)

The White Comet Incident
After years of development, Echidnaopolis was one of the most developed cities on the planet. While two of their top scientists, Jordann and Kayla-La, were exploring and charting the stars, they came across the discovery of a massive comet on its way to Mobius and on a direct collision course for Echidnaopolis. The two brilliant scientists proposed that they lift their city airborne using the power of numerous Chaos Emeralds to avoid destruction. The Echidnas proceeded to launch a massive excavation of the planet in search of the Chaos Emeralds. Once they had obtained enough, they placed them within the deep caverns below the city. Meanwhile, the Fire Ants dug their way deep under the city until it was no longer connected to the planet's surface. The power of the Chaos Emeralds, resonating through the city's infrastructure, Echidnaopolis was lifted into the sky, just before the comet struck the planet. (StH: #34)

Civil War

 * See: Dark Legion