stony mountain; rocky mountain
Refers to a mountain or hill covered with rocks or stones, often barren or with little vegetation.
その地域には石山が多く、植物が育ちにくい。
The area has many stony mountains, making it hard for plants to grow.
Compound of 石 (ishi, 'stone') and 山 (yama, 'mountain'). The reading いしやま is a straightforward combination of the kun'yomi readings.