No one is allowed to sow in the Bardenas Reales […], in the areas of Barreras and Campos, if [these areas] had not been sown for the last thirty years; nor in the rift ['congosto'] of Fustinana, […]; and all those [fields] that had been ploughed in these sites or any other in the Bardenas, after thirty years [not being ploughed?], can be turned into waste land ['se dexe ermar'], and, in case this was not done, it shall be possible to freely exploit them […]