1. Boreholes: as in craters, sinkholes

2. Basalt was added as a placeholder for Sinkholes

3. Humongous sinkholes and landslides have developed along this line.

4. There are several fresh water sinkholes on land that are deeper than Dragon Hole.

5. You know, sinkholes have been on the rise, actually, worldwide, due to urbanization, drilling, fracking.

6. The abrupt appearance of the sinkholes reflects changes to the groundwater regime around the shrinking DS.

7. Upon the release of the Underground update, all Basalt in Sandbox Mode were to be replaced by Plugged Sinkholes