what is it warning? please someone translate

https://i0.wp.com/saywhatjapan.com/wp-content/uploads/2018/04/DSC_0804-768x432.jpg?fit=768%2C432https://i0.wp.com/saywhatjapan.com/wp-content/uploads/2018/04/DSC_0804-768x432.jpg?resize=150%2C150TSSIGHTSEEINGattention board,Suwa Taishawhat is it warning? please someone translate- POST PHOTO ! HELP TRANSLATE JAPANESE ! ALL FREE !! -