Sun Gazing

Hi,
I did some sun gazing last year. After standing for a
while it appeared I was in a multicoloured light tunnel with the
sun being the light at the end of the tunnel rather than being a
solid object.
Even though my feet were planted on the ground I had the thought
“I know what I can do, I can walk up the tunnel”. The first part
was easy but then I felt resistance and couldn’t get past half
way. Does this make sense ?

I’d be interested if anyone could shed any further info on this.

Brian