Underground

The Underground icon represents a subway or metro system, a common form of urban transportation. Underground transportation has become a vital part of city infrastructure.

In software and digital platforms, the Underground icon appears in applications related to urban planning, transportation, and city navigation. It is also used in user interfaces to represent transportation options or infrastructure.

From a UX perspective, the Underground icon communicates the idea of urban transportation or infrastructure. It helps users understand that a button or link leads to content related to city navigation or transportation.

Underground is one of 824 icons in Pico-icon, made by Picon Contributors and released under Open Font License. It is drawn on a 8 × 8 grid.

Sign in (it's free), then open Get icon, Install with shadcn CLI, and pick your package manager to copy the command. It adds UndergroundIcon to components/icons/picon-underground.tsx: one file, a size prop (24 by default) and every SVG prop, with no icon package.

Copy it as React (from Get icon, or the Code section): a typed UndergroundIcon component you paste into your project, with no package to install. Only the icons you import reach your bundle. It works in Next.js and any React app.

Open Get icon, then Copy as code, and pick Vue, Svelte, Angular, Solid or Preact; the Code section shows each one too. Every version is one self-contained component with the SVG inside, and SVG and data URL copies are there for plain HTML and CSS.

With Pro, the shadcn.io MCP server lets Claude Code, Cursor or any MCP client find the Underground icon, or any of 824 Pico-icon icons, and install it from a prompt.

It's drawn in currentColor, so it takes the text color wherever you use it: a class like text-primary recolors it. To bake a color in, set one in Customize before you copy.

Set width and height on the component, or a class like size-6. It's drawn on a 8 × 8 grid, so it stays sharp at any size. Customize also sets the size it exports at, its padding and rotation.

Yes. It follows the text color, so with text-foreground (or any theme token) it changes with your light and dark themes. The icon is a vector, so it needs no separate dark asset.

Next to a visible label it's decoration: add aria-hidden="true" so screen readers skip it. Standing alone, as in an icon button, give the button a name instead, like aria-label="Underground", so screen readers say what it does.

Yes. UndergroundIcon passes every SVG prop to the svg element, so <UndergroundIcon aria-hidden="true" /> works, and so do role="img" with aria-label, or a title child, when it carries meaning on its own.

Yes. Open Get icon, then Download file: SVG for code or design tools like Figma; PNG, WebP or JPEG at 512px; or an ICO favicon with 16, 32 and 48px inside. Each one uses what you set in Customize.

Yes. The Open Font License allows commercial use; the icons can't be sold on their own. The full terms are in the license, linked on this page.

No visible credit is required: Open Font License only asks that you keep the license notice if you ship the icons' source files. Icons installed with the shadcn CLI already start with a comment naming Pico-icon, Picon Contributors and the license.

Yes. Copying and downloading it is free, and the shadcn CLI install only needs a free account.

Its tags are transportation, infrastructure, urban, railway and city. Each tag page lists the icons that carry it from every library, which is the quickest way to find a match for Underground in another set.