adcelannotate = {"mobilepaywallcategory" : "MOBILE_PREM-TRAVEL","nativepaywallcategory" : "NATIVE_PREM-TRAVEL"};METULLA, Israel — A frontier town that juts into a hostile neighboring country and has a long history of militants firing upon it doesn't seem like a typical place to seek serenity. But that's exactly what you will find in Metulla, Israel's most northerly point, which is engulfed by Lebanon on three sides but which is home to a nature reserve.