The extra earth formed Mount Purgatory on the other side of the Earth.
The Paradiso begins at the top of Mount Purgatory, at noon on the Wednesday after Easter.
The two start to follow a small stream, the Lethe, which drains from Mount Purgatory, where they are headed.
The steep steps to the station recall Mount Purgatory in Dante's Purgatory.
The seven terraces of Mount Purgatory (one per deadly sin)
In his Divine Comedy story Purgatorio, Mount Purgatory is split into different terraces for those being made to be ready for heaven.
The piece follows typical overture form, starting out with Dante looking up to the stars atop Mount Purgatory.
Sakutaro climbs Mount Purgatory to be reunited with Maria.
The second movement, entitled Purgatorio, depicts Dante and Virgil's ascent of Mount Purgatory.
Mount Purgatory, on exactly the opposite side of the world, was created by a displacement of rock, caused by the same event.