Answer: motherlode

AnswerCrossword Clue
MOTHERLODE

Miner's dream

MOTHERLODE

1982 adventure flick directed by and starring Charlton Heston

MOTHERLODE

Major supply

MOTHERLODE
Heston film of '82
MOTHERLODE
Profitable source
MOTHERLODESierra Nevada find.
MOTHERLODEBonanza
MOTHERLODEMain vein
MOTHERLODERich vein of ore
MOTHERLODEProspector's dream
MOTHERLODEPrime ore source
MOTHERLODEJackpot
MOTHERLODEIn the ..., there's the greatest concentration of ...
MOTHERLODEVein of ore
MOTHERLODEGold seeker's target