Digirtu waa mid la beeran jirey ilaa wakhtiyo aad u horeeyay. Meelo badan oo kala duwan ayaa laga helay digir aad u taariikh dheer. Noocyo ka mid ah digirta waxaa laga beeran jirey wadanka Afgaanistan iyo buuraha Himalayas. Sidoo kale nooc ka duwan waxaa laga beeran jiray wadanka Taylaan wakhti imika laga joogo 7,000 sano. Waxaa iyadana xusid mudan in boqortooyadii hore e Masar ay isticmaali jireen digirta. Sidoo kale deegaano badan oo ka mid ah qaaradaha Ameerika waxaa laga beeran jirey digirta wakhti imika laga joogo 8,000 sano, taasi oo qaaradahaas ka dhigeysa kuwa ugu da'da weyn ee inta la ogyahay taariikhda beerashada digirta caalamka.