"We go through the doors," Thor explained. "They're more or less like what Heimdall does, guarding the gateway, only these doors seem to have no guard preventing travel to and from. I could show you, if you wanted? There is a door to Asgard."

Thor frequented it with Sif whenever he had the opportunity and it was nice to be able to check on his realm and know his people were still healthy and hale within.