ʻO ka World Tunnel Congress 2027, ka mea i kapa ʻia ʻo WTC 2027, he hōʻuluʻulu ʻia o nā ʻoihana hanohano he 2,700, nā mea noiʻi, nā mea hana kulekele, a me nā hui mai nā ʻāpana like ʻole e like me ka ʻenekinia kīwila, ke kūkulu ʻana, ka halihali, a me nā ʻoihana. ʻO kēia hanana ka manaʻo e hoʻomaʻamaʻa i ka hoʻololi ʻana o ka ʻike, hōʻike i nā manaʻo hou, a komo i nā kūkākūkā e pili ana i ka wā e hiki mai ana o ka tunneling a me ka ʻenehana lalo. ʻO ka koho a Antwerp e hoʻokūpaʻa i ka hāʻawi nui o Belgium i ka tunnel...