In 1989, I had a maybe similar experience as I was laying down on a stone on the top of a high mountain, facing the morning deep blue sunny sky, trying to relax myself because my back was hurting. After a while, I opened my eyes and was very surprised to see a hudge yellow perfectly shaped triangle that occupied half of the sky just above me. All three yellow lines width size were like the distance of the separate fingers of my hand when extending my arm forward and the inner part of the triangle was blue like the rest of the sky. I kept starting at it for a minute, then closed my eyes and about 10 seconds later, opened them again. The triangle had disappeared. After this, the following events of that morning turned out to follow a strange sequence. Big ravens started flying above me, there are a lot of them in that area which I normally enjoy observing, but this time they started a descending flight until nearly touching my body, until I just jumped on my feet, feeling something wasn´t quite right. Then I went down the mountain and there was standing an old man, more than 80 I think, beside my car. He started a nice conversation, but its content was also very strange to say the least. He told me he used talking to birds and animals and understood their answers, the approximation of the end of this world, that he never slept when laying in his bed during the night, that first thing in the morning, I should put my feet into ice cold water for my circulation, and so on, all this while washing my car at perfect ease and skill. I now also remember that right before laying down on the stone, I was unexpectedly surrounded by clouds that were so compact that I hardly could see my feet anymore and as at that point I was standing near a profound precipice, I started counting every move I did to balance my arising anxiety sensations. After 5 minutes or so, the sun was shining again, with no clouds at the sight.
I never found any explanation for what happened that morning, but what I never could forget was the synchronization of all the events together. Also that strange situations often arise when I´m walking out there alone -I use to be in the company of my hubby- which I rarely do although I enjoy it. Now thinking, I could give an intentional try and see what happen