3C biyu gudun wuta fitar da hayaki fanBabban aikace-aikace, gine-ginen farar hula, masana'antun ma'adinai, ƙasa, rami, tsaron sama da sauran ayyukan injiniya (Injiniya), rami a yankin plain na iya zama da wuya, rami a tsaunukan dutse har yanzu yana da yawa sosai, ramin an tsara shi bisa ga hanyoyin da aka tsara, sa'an nan kuma an kafa rami a kan dutsen, siffofin ramin suna da tsawo, wani lokaci yana buƙatar mintuna goma sha biyu ta hanyar rami, ramin har yanzu yana da duhu sosai, don haka buƙatar kunna hasken kusa ta hanyar ramin.

Tunnel ne na rabin rufe wuri, motoci tafiya, ƙura musamman da yawa, kuma iska m, muhalli dangane da ba shi da kyau, don inganta Tunnel ta iska, bukatar Tunnel shigarwa amfani da high zafi halaye: high zafi juriya kyau, high inganci.