Related Clues:
- Oil source has damaged the French
- Some mudrock
- Frackable rock
- Rock formed from clay
- Pit; prey
- Earth's crust, mostly
- Prey seen where stone is excavated
- Person who's pursued landing-place around banks of river
- Rock in which fossils can be found
- Limestone source
- Rock source of petroleum
- Hunted animal in stone pit
- Thin-layered sedimentary rock
- Hospital in transaction for source of gas
- Rock involved in fracking