…[T]ribal elders in [Mountain P]rovince…are renewing their cooperation...in their new struggle to defend their domain from the threat brought by pending large-scale mining applications...[M]ine applications covering vast tracts of their ancestral domains…were filed by local and foreign mining corporations…[L]arge-scale mining…would destroy their ancestral homeland and the Chico River which serve as the water source of their rice fields and agricultural lands…