Pure sulphur causes Indonesia's Kawah Ijen volcano to burn blue lava at night. See spectacular photos -- and a video -- here.
Expected Max UV Observation:
This is today's expected maximum UV reading, taking today's weather into consideration.
- Take precautions - cover up, wear a hat, sunglasses and sunscreen especially if you will be outside for 30 minutes or more
- Look for shade near midday when the sun is strongest