It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
This image was acquired from
Keywords from Image Description:
storm lightning weather nature sky thunder electricity strike energy thunderstorm danger power bolt rain flash cloud light bright night blue dramatic dark charge powerful electric color discharge electrical landscape thunderbolt striking environment summer thunderclap land natural park meadow field grass rural green pasture country
Page 2017 Free-images.com. All images are Public Domain