Feldip swamp rocks are rocks within the Feldip Hills that may be mined to produce generic rock items. They may be mined at any Mining level. Fairy ring destination AKS will get you near some Feldip swamp rocks.
Their primary function is to be used to provide rocks for use in hunting jubbly birds during and after Recipe for Disaster: Freeing Skrach Uglogwee.
Prior to the Mining and Smithing rework, they were known as Pile of Rock, and behaved differently. Unlike most rocks, they could be mined three times, with the pile shrinking and a rock item being produced each time it was mined. After being completely exhausted, the pile would respawn a short time later. The pile would also eventually refill after being mined just one or two times, but this took longer than respawning after being completely exhausted.
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- In RuneScape Classic, similar rocks could be found in the Underground Pass. Unlike Feldip swamp rocks, they could only be mined once, and were simply called "Rocks", and had a Mining level requirement of 3, instead of 1. The item they produced was also the same as punishment rocks.