Brokka is a character from The Legend of Zelda: Breath of the Wild. Brokka is a Hylian traveling miner who can be found travelling through the West Necluda region of Hyrule.
She mines Ore Deposits primarily from Dueling Peaks and often travels to Kakariko Village to sell Gemstones which she tends to obsess about often talking about mining and gemstones to other travelers she meets. She offers Link useful tips usually centered around mining Ore Deposits providing him valuable information that can help him mine Ore Deposits. She occasionally hums and sings songs to herself about gemstones as she travels around.
Interestingly she mentions Bombs and their use in ore mining implying conventional bombs are still used in Hyrule in addition to Bomb Arrows as Remote Bombs are ancient Sheikah technology, even though Link encounters no Bomb Shops or bomb merchants save for shops and merchants that sell Bomb Arrows.