All I have to do is Dream?

I just woke from a dream that was a might bit spooky.

For some reason, --dictation of dreams always seem to start this way-- I was climbing the side of a steep mountain in a snowstorm. Close to the top of this mountain was a wide plateau. When I made it to the ledge, I could see my youngest brother walking toward me. It appeared as though he was living there, and I believe that he even had a cup of coffee in his hand.

The next immediate part of the dream was that the entire canyon had filled with snow, right up to the level area we were standing on! It appeared as if you could walk right across it! And my brother, tried to do just that.

I saw him disappear, headfirst, into the snow. I could hear his muffled screams as he sank deeper, and the color of his coat slowly disappeared. Soon, I could no longer hear or see anything. I remember being extremely distraught!

Not sure how much time passed, but I finally decided to yell for him. Soon after, I could make out his voice. Some of the snow had turned to slush, and I could see him splashing through it, finally reaching the plateau. I then I woke up in a highly anxious state.

Am I being a good brother? Have I called out to him enough to direct him toward safety? Is this my subconscious, revealing pent up guilt in a dream? Or was it just another dream?