"Chinchaga, Alberta is known for some of North America’s most prolific gas fields, the most prominent being the 450 BCF Cranberry field, the 430 BCF Hamburg field and more recently the 450 BCF Ladyfern field. These fields all produce from the upper Devonian Slave Point formation where the leached and fractured limestone provides a highly permeable and porous reservoir capable of producing more than 50 million cubic feet of gas per day during their first year of production. The entire Slave Point formation in north-central Alberta and British Columbia is estimated to contain 7 TCF gas in place."