Cliffstone Centre Quarry is a large quarry in the Cliffstone Mountains area. Speedy McAllister, Bill and Ben, Marion, and Timothy work here. It is the largest quarry on Crotoonia known to date. The quarry first appeared in Casey Jr's Mail Run.
| Locomotives | Steam | Thomas | Edward | Percy | Toby | Tootle | Marion | Bill and Ben | Speedy Mcallister | Lady | Timothy | Pheobe | Alayah | |
|---|---|---|
| Diesel | Daisy | Mavis | Ralph | |
| Rolling Stock | Passenger | Annie and Clarabel | Henrietta |
| Goods | Katy Caboose | The Slow Produce Special | |
| Non-Rail Vehicles | Bertie | Dip | Leonard | Kristabelle and Kristalynn | Harold | Dusty Crophopper | Budgie | Pippa | Jay Jay | Herky | Big Jake | Tracy | Snuffy | Savannah | Old Oscar | |
| People | Mrs. Carla | Orville | |
| Locations | Celgreb City (Central Station, Tunnel, Celgreb Hills) | Crotoonian Mail Depot | Great Wolf Forest | Wedgeton Airfield | BaseLine Quarry | Cliffstone Junction (Valley, Cliffstone Centre Quarry) | Bluthsburg (Steelworks, West Junction) | Inkblotia (Castle, | |
| Locomotives | Skarloey | Rheneas | Peter Sam | Sir Handel | Rusty | Duncan | Duke | Freddie | Mighty Mac | Bertram | Luke | Chugs | Ivo Hugh | Millie | Train | |
|---|---|---|
| Rolling Stock | Coaches | Skarloey Railway Coaches | Chugs' Coaches |
| Other | Trucks | Slate Trucks | Narrow Gauge Breakdown Crane | |
| People | Dai Station | |
| Locations | Main Line | Gridinia Bay (Junction, Castle) | Denverville Slate Quarry | Old Valley Line | Celestia (Park, Pond) | Midline Station | Thra Viaduct | Apple Acres Farm | Din Y. Dee Gold Mine | Chipperton Wharf | Danotwick | Cliffstone Centre Quarry | Cliffstone Valley Village | Cliffstone Junction |
| Cliffstone Gold Mine Branchline | Denver Slate Quarry (Quarry Junction) | Din Y. Dee Gold Mine Transfer Yard | Jen's Pond (Loop Line, Freddie's Shed) | Apple Acres Farm | Brimstone Mine | Old Treacle Makers | Din Y. Dee Gold Mine Company | Aurum Mountain | |