During a walk by a snowy creek, I was struck by these beautiful ripples of color growing on a fallen tree trunk. They were a striking surprise in an all-white landscape.
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Internet research reveals this is a colorful type of tree fungus which helps to decompose dead material. Quite pretty, I think.
Your nature shots are always so beautiful and this one is no exception. I saw this type of fungus formation on some trees when we were hiking last fall...some of them were huge.