You appear in the winter forest, if you turn around, you will find an ice biome with thorns, which you need to cross. After you find yourself on the other end of the thorns, you will see a village in which there will be a needle. To find the entrance to the cave with a portal, you need to go down under the igloo, and there will be broken a couple of blocks, in the short you will find a portal.

LED:  parcat