The Cloud Mountain mines were abandoned mines on Cloud Mountain used as a base of operations by the Cularin resistance. They were dug by Sunburst Mining, but proved unproductive and were therefore abandoned. Sunburst left some security droids to maintain their legal claim, however. Towards the end of Sunburst's mining, they tried drilling small holes randomly into the walls. They covered these up with meter-square plaques featuring the company's logo.