The proposal for the protection of the Triglav Lakes Valley area was first put forward by the seismologist Albin Belar in 1906 or 1908. However, the proposal was not accepted, as there was no legal base for it and the then valid laws prohibited any restriction of pasture. The strategic basis for the protection of the area, titled The Memorandum (), and which explicitly mentioned the proposal of Belar, was submitted to the Provincial Government for Slovenia in 1920. The idea was finally implemented in 1924. Then, at an initiative by the Nature Protection Section of the Slovene Museum Society together with the Slovene Mountaineering Society, a twenty-year lease was taken out on the Triglav Lakes Valley area, some 14 km². It was destined to become an Alpine Conservation Park; however, permanent conservation was not possible at that time. The name Triglavski narodni park was first used in 1926 by Fran Jesenko.