Rivet Ravine

Rivet Ravine ( ロコットけいこく Rockot Valley) is a canyon Dig Site and is home to a mine cart shaft. Only Level 3 Fighters and up are allowed access. This site introduces the character of McJunker. There are many different types of vivosaurs that can be found and acquired here. However, for the biggest dig site, it is introduced in the shortest chapter. It has the greatest number of vivosaurs that can be found at one dig site in Fossil Fighters, with a total of 32.

Additional Areas
Mole's Secret Tunnel is home to Lemo and O'mel, the Mole Brothers. This tunnel can be found in Tunnel 4, in an enclosure. To progress, you must successfully complete the tasks, such as answering questions true or false, or opening chests in the right order. The Bonus Areas are two areas in the main area that are only accessible via the bridges that go down, not up, when making your way to the tunnels. They hide impressive Fossil Rocks. A Pay-To-Dig site is in Tunnel 1 and costs 4000G for each visit.

Main Site
An asterisk (*) indicates a rare vivosaur.

Bonus Area 1
Bonus Area 1 can be accessed after reaching Fighter Level 5.

Tunnels
An asterisk (*) indicates a rare vivosaur.

Tunnel 5
Tunnel 5 can be accessed after fixing McJunker's broken mine cart.

Pay-to-dig Site
The Rivet Ravine Pay-to-Dig Site can be accessed after reaching Fighter Level 7.

Moles' Secret Tunnels
The Moles' Secret Tunnels can be accessed after reaching Fighter Level 6.

Storyline
In the tunnels, you meet McJunker. He explains that his mine car, which leads to new fossils, has been trashed. You must go after his pliers and his wrench, using your upgraded sonar. However, BB soldiers appear whenever you dig one up. Once the tools are found, McJunker requires you to clean his rusted tools. After successfully cleaning them he will ask you to go to Holt in the Junk Depot. Use a V-Raptor to defeat him and obtain the Electrominite. Bring it back to McJunker, who fixes the car. In Tunnel 5, though, the BB Bandits are waiting. Battle Snivels and Rex in a row to beat the chapter and obtain the second tacky idol.

Trivia

 * Rivet Ravine contains the fossils of 32 vivosaurs, the most of any Dig Site in Fossil Fighters.
 * Like Rainbow Canyon, Rivet Ravine has at least one vivosaur of each Element.
 * Blambeau can be found in Tunnel 2. The Hero is rewarded with 10,000G for capturing him.