Bydd angen sgaffaldiau uchel a thrwm iawn ar gyfer y gwaith cadwraeth a fydd yn mynd rhagddo yn ddiweddarach eleni. Cyn gosod y sgaffaldiau, comisiynwyd Archaeoleg Mynydd Du ac ArchaeoDomus i gynnal gwerthusiadau archaeolegol, er mwyn osgoi unrhyw nodweddion hynafol bregus a gladdwyd yn y ddaear a allai gael eu difrodi ac i sicrhau bod gan y sgaffaldiau sylfaen sefydlog.
The conservation works which will go ahead later this year, require a very high and heavy scaffold. Before the scaffold is installed, Black Mountains Archaeology and ArchaeoDomus were commissioned to undertake archaeological evaluations, to avoid any ancient fragile features buried in the ground that may be damaged and to ensure that the scaffold has a stable base.