so does -- potential for discovering a high grade gold deposit;...

so does
-- potential for discovering a high grade gold deposit;
-- favourable permitting regime within a highly rated investment
jurisdiction;
-- excellent infrastructure with many of Australia's largest iron mines in
the region;
-- year round exploration and mining access; and
-- reasonable drilling costs and drill rig availability.

justify a 200% increase in the share price today?

I think it does .
DEG shares at one tenth is a derisively low price for a stock with fresh direction ..and an evident focus on keeping its cash . And I'm prepared to believe that the royalty stream from Mt Dove will deter future cash raisings until the nede arises to fund ( 20%) into Turner River gold