Agonising Abyss
Brittle Bonanza
Bedrock Bonkers
Crumbling Caves
Dangerous Dig
Deadly Diamonds
Dig Dog
Dig-Dug
Erratic Excavation
Fragile Furrow
Ghastly Grotto
Horrible Hole
Igneous Ignominy
Infinite Ingots
Jeopardous Jewels
Kolossal Kascade
Lopsided Lapis Lazuli
Mazy Mine
Nickel Nightmare
Oppulent Occlude
Precarious Pit
Precarious Pit
Quark Quarry
Quark Quest
Quartz Quarry
Quirky Quarry
Rickety Rocks
Subterranean Subterfuge
Top-heavy Treasure
Transient Treasure
Treacherous Terrain
Tremor Trapped
Ulycess Unearthed
Usurping Underneath
Vacillating Veins
Wicked Wormhole
Well Wisher
Xciting Xcavations
Yodelling Yoghurt
Yearning something ?
Zarking Zircons
Zarking Zoppers
Zirconium Zombies

Non-aliterating :

The Adventures of dr. Droppenstein
Stone Drop?  Potholed?  Dig Or Die
Tunneller?  Rock Drop?  Stone Fall
Distinguised Dr Droppenstein's Dig for Deadly Diamonds