Natural Fuel Produced From Fine Sedimentary Rock

This page is the CodyCross answer for the clue below from House of Horrors, Group 1108, Puzzle 1 (Creaky Stairs).

Question is: Natural Fuel Produced From Fine Sedimentary Rock

and the answer is: SHALEGAS

Word Meaning:

SHALE GAS — Natural gas extracted from shale.

Definitions from Wiktionary.

Natural Fuel Produced From Fine Sedimentary Rock - House of Horrors CodyCross Answers | CodyCross Solutions