evidence: In the years 1990-1991, Argentina’s territorial claims continued to surface, reopening the issue seemingly settled in 1898 through the Experts’ Report. The border between Mount Fitz Roy and Cerro Daudet was renegotiated by Argentina, claiming 2,500 km2 of the Southern Patagonian Ice Field. At that time, Chile lacked official maps at the necessary scale to negotiate this demand in its favour, and some voices argued that there was no intention to do so. Therefore, the task of the new demarcation was transferred to the Chile-Argentina Mixed Boundary Commission. Of the total 2,500 km2 claimed by Argentina, approximately 1,000 km2 are in the so-called Zone B, between Mount Fitz Roy and Cerro Murallon, for which no official demarcations had been established to date. The revision of the border between Cerro Murallon and Cerro Daudet in favour of Argentina sparked another wave of discontent among the public opinion, with citizens questioning what they stood to gain from willingly ceding to Argentina 2,500 km2 of Chilean territory of immense beauty, with ancient ice and part of the Torres del Paine National Park.