Groundrise
Groundrise was the process shown to Ambris Hentadile by a stone pilot, presumably Maugin, in the Screefields, after Nate Quarter had returned to New Sanctaphrax. It explained the connection between earth and sky.
Process
Glisters were carried over the Edge Cliff by Mother Storms. This formed the building blocks for all life in the Edgelands. The glisters formed the Edge Cliff itself by forming scree and then solid rock as well. Flight-rocks were propelled up, landing most plentifully in the Stone Gardens, but also over parts of the Edge. These glisters also formed the clouds above the Edge causing lightning producing stormphrax releasing light and producing more glisters. Then the cycle continuously repeated.
Dangers
The force of groundrise was very powerful, causing things to return to what they originally came from. Although this was beneficial to creatures such as Tug, it could cause creatures to return to Open Sky as glisters if they were left in the Screefields for too long.