+**Shale oil** is a type of [fossil fuel](/wiki/fossil_fuel) liquid [hydrocarbon](/wiki/hydrocarbon) found within impermeable shale rock formations. It is distinct from conventional crude oil and its [extraction](/wiki/extraction) often requires advanced techniques. This unconventional resource represents a significant source of energy.
+## See also
+- [Oil Shale](/wiki/oil_shale)
+- [Fracking](/wiki/fracking)
+- [Petroleum](/wiki/petroleum)
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