Horsetail fall is hit by a ray of light at sunset for 15 days in February, which makes it look like it is burning. Horsetail fall is hit by a ray of light at sunset for 15 days in February, which makes it look like it is burning. Horsetail fall is hit by a ray of light at sunset for 15 days in February, which makes it look like it is burning. Horsetail fall is hit by a ray of light at sunset for 15 days in February, which makes it look like it is burning. Horsetail fall is hit by a ray of light at sunset for 15 days in February, which makes it look like it is burning. Mirror Lake Labels