From the description: 'It started with a miner pushing a cart loaded with sand towards the truck bed and when I arrived at the mine site, the process of loading sand into the truck bed was almost finished, only about two to three carts left. After the miner finished, he diverted the sand from under the cliff by himself and after a few moments, another miner came to help and these miners would divert the sand together on the part of the cliff that had dried out using a crowbar and long bamboo. After successfully dropping the dry sand, suddenly the top of the cliff experienced a landslide, initially only a few rocks, then about three minutes later the other top of the cliff also experienced a major landslide until the duration was quite long. After the landslide ended, one of the miners diverted the sand from the top of the cliff using long bamboo so that the condition of the sand cliff was truly stable again, after that they dumped the rocks." I wonder what they were digging for though.
