Lumbridge mine

The Lumbridge Mine was released during the Learning the Ropes quest update. It contains tin and copper ore, and 3 anvils. The smithing tutor and mining tutor are found here. Unfortunately, after the tutorial, the mine caves in. It is revealed later that the cave in was caused by a three-headed Dragon, which had escaped a fight with Sir Vant underneath Lumbridge.

The mine was most likely under River Lum, as there is a a small pool in it with water constantly dripping in. There were mining cart tracks there leading into unknown places.

It should be noted that the mine would have been one of the best places to train smithing through the beginning levels of smithing where players must make bronze items due to the mine's proximity to an anvil, a furnace and the bank.