Has anyone had a third eye experience where they see a tunnel in meditation or astral travel?

i have seen this third eye tunnel a couple of times.. i followed it in and it was amazing.. i am wondering if others had this experience... i believe this is how we go out when we die.. and no i was not on psychodelic drugs.. i experienced it as an astral travel.. just curious if other have also...and if so what they saw.. thanks:)