Inuit guides invite travelers to experience the local traditions of this Arctic oasis.An iceberg in Ilulissat, Greenland.Credit: Christopher Churchill/Travel + LeisureZipping beneath skyscraper-high icebergs on a small skiff boat, the January wind whipping my face, I knew I was getting the full multisensory experience of Greenland. “This is my freedom,” Jan Cortsen, owner of Ilulissat Local Guide, told me.Cortsen grew up in the ice-covered 5,000…