This icon represents a tunnel. It has an outline of a tunnel that looks like a "C" pointing downwards. There are three dashes below the "C" shape to depict where the road is.
This is a Tunnel icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,300 icons, all in the same style and quality.