Following an upward review of the already large estimated reserves of the two main concessions in the Rovuma Basin, the discovery of commercial quantities of gas and plans for the construction of onshore and offshore gas liquefaction plants and for the construction of a gas pipeline for supply to South Africa, Mozambique’s government has, for some years now, recognised the need to review its Oil and Gas Upstream Activities Law enacted in February 2001. The review of this legislation is now embodied in Law no. 21/2014, of 18 of August (the Oil and Gas Upstream Operations Law or "OGUOL"), which is still subject to further regulation.