unique karst hills, a natural wonder. rounded mountains covered with green vegetation

tree mountain hill nature wilderness vegetation ridge landscape valley jungle plateau plant unique karst hills natural wonder rounded mountains covered green stretch horizon lush tropical blue sky clouds philippines chocolate hills hill view point mountains wonderful national park travel destination unusual protected area unesco popular landscapes green impressive round landmark tourist attraction philippines sky unique vegetation grass covered picturesque wonder tropical horizon monument landscape cone-shaped grass geological formation geological famous conical dome-shaped conservation clouds carmen brownish bohol island bohol blue beautiful attraction