| Category | Artifacts |
| Type | artifact |
| Forge | unknown |
| Smith | group of Stone Wardens |
| Enchanter | Geb |
| Location | Mazâd-Khâl |
The Earth Valve is a legendary relic, created by the Stone Wardens. Its use is not without peril, for the item has deteriorated with time, each use of this massive valve leaves cracks in its surface. The cracks vary 1' to 3' in with and 10'-15' in length. Though the cracks seem large, they are relatively small compared to the massive size of the valve. The valve has a diameter of 215'.