Tartean agertu diren erromatar aztarna hauek kontutan hartuta, oso litekeena da bigarren mailako galtzada izatea Tritium Tiboricum (Astigarribia, Mutriku) ab Asturica Burdigalam galtzada nagusiarekin lotzeko, Kantauri isurialdeko beste hainbat tokitan gertatzen den moduan. Deba arroan Veleiatik etorrita Kurzetatik sartuko zen, edo Suessatio (Arkaia) edo Mariturri-tik hasita Arlabanetik. Bi kasuetan, erromatar bidea Soraluzetik pasatuko zen, bai ala bai: ibaiaren ezkerraldetik iritsiko zen, gaur egunean zubi nagusia dagoen tokiraino, eta bertan ibaia zeharkatu eta Debaren eskumaldetik, poliki poliki gora igotzen zen Maltzagako labarrak saihesteko; azkenean, Elgoibar aldera jaitsiko zen.
Bide hau ez zuten erromatarrek asmatuko; bidea aurretik izango zen, eta erromatarrek zabaldu eta egonkortu egingo zuten.
…baina kontutan hartzen badira Deba arroko erromatar aztarnak, eta Kortazarreko Haitzak oso leku aproposa dela inguruak zelatatzeko, aukera honek kontutan hartzekoa dela ematen du.
Mapa kargatzen...
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2000 urteko hamarkadan Eusko Jaurlaritzak Eskoriatza eta Maltzaga lotuko zituen tranbiaren proiektua bultzatu zuen. Tranbia berri honen laugarren fasea (Bergara-Maltzaga) Soraluzetik pasako zen.
Proiektua 2005 urtean aurkeztu zen Debagoieneko herritan, baina gobernuaren aldaketa batetik, eta udalek jarritako alegazioak bestetik, azkenean bertan behera geratu zen.