Fissure

Fissures are a phenomenon that appears in Sonic Boom: Fire & Ice. They are hazardous, geyser-like elemental tubes in the earth formed as a result of Dr. Eggman's mining operations on Ragna Rock.

Description
Fissures are unnatural formations created by the by-products from Dr. Eggman's mining operations on Ragna Rock. When erupting, they begin emitting powerful and constant streams of Fire and Ice energy. This energy is hazardous to the environment, capable of creating weather patterns that can doom the world. However, it can also be absorbed by devices, granting the users fire and ice powers. Fissures' flow can be reversed using the same energy they emit, effectively sealing them up and causing their local weather to stabilize.

Sonic Boom: Fire & Ice
When Dr. Eggman began mining for Ragnium on the island of Ragna Rock, he would pipe off the messy by-products from his operation to adjacent islands, creating fissures that began damaging the environments. To protect the fissures, Eggman assigned his Island Defenders to them, including D-Fekt.

As the fissures began creating weathers that could doom the world, Team Sonic set out to investigate. Upon finding a fissure, Sonic and Amy's Communicators absorbed its Fire and Ice energy, giving Team Sonic the power to seal the fissures encountered during their mission to save the world.

Gameplay
In gameplay, fissures serve as the goal point for various adventure levels. Upon reaching a fissure, the player has to press and the playable character will close it, marking the completion of the level and returning the player to the World Map.

Trivia

 * In adventure levels, the fissures replace the goal teleporters from Sonic Boom: Shattered Crystal. Besides their appearance, these two goal types work in the same manner.