A Wisconsin judge has agreed to release “Slender Man” stabber Morgan Geyser from a psychiatric hospital despite desperate last-minute efforts by health officials to keep her committed.

The geyser's formation is due to mineral deposits that have collected over decades, while thermophilic algae thriving and growing in the moist, warm conditions give it its unique rainbow color.

With the geyser and its Inn leading the way, visitors can find lots of other activities in the area, rainbow-colored pools and hissing mud pots. Here are the top 9 things to do at Old Faithful ...