For several decades now, the governments of El Salvador, Honduras and Guatemala have shown interest in conserving the Montecristo mountain mass, a natural area in a territory shared by the three countries. The initiative of the Trifinio Plan came about in the 1980s as part of the regional peace processes which culminated in the signing of the Esquipulas peace agreements in 1987. Within this framework and under the strong leadership exercised by Roberto Carpio Nicole, the vice-president of Honduras at the time, a process was initiated which led to the subscription of the Treaty 1986 for carrying out the Trifinio Plan among El Salvador, Guatemala and Honduras.
An initiative called Trifinio Plan was formed as part of the regional peace process which culminated in the signing of the Esquipulas peace agreements in 1987. Later, with the support of the General Secretariat of the Organizations of American States (OAS) and the Inter-American Institute for Agricultural Co-operation (IICA, by the Spanish acronym), the Trifinio Plan was developed.
The Trifinio Plan allowed for joint actions of cooperation to be carried out among Guatemala, El Salvador and Honduras in a natural area of great value. At the same time, it served as an example of practical efforts being carried out in Central America toward integrations of river basin management. This led to establishment of an international park shared by the three countries taking into account all aspects of IWRM.