In Dongchuan is located a main copper mine of China. It is a place where mud rock flow often happens.

东川是我国铜矿主产地，又是泥石流灾害多发区。

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With high and steep slopes and large river bed gradient, the Damiao Mountain is an area where mud rock flow occurs frequently.

大苗山山高坡陡，河流坡降大，是泥石流的多发区。

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Wudaoliang group is grayish - white, yellow - grey, dark - grey ash rock, which interbeded with the conglomerate, sandstone, a little amount mudstone, oil shale with unconsolidated sand mud rock.

五道梁群以灰白色、灰黄色灰岩为主，含有砾岩、砂岩，夹有少量泥岩、油页岩和未固结砂泥沉积。

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Between 1, 000 and 1, 500 tonnes of mud and rock is being removed from the site between Newton Abbot and Exeter.

BBC: Devon mud-hit railway line reopens

So extensive were the wet-season mudslides that in some years more mud and rock fell back into the canal than had been taken out in the first place.

ECONOMIST: The Panama Canal

The eruption also engulfed a small Maori village, Te Wairoa, in mud, ash and rock.

BBC: Lakeside treks in a geothermal land