# Overlay Layers {% hint style="info" %} This article covers: * [Viewing data in the map viewer](#viewing-data-layers-in-the-map-viewer) * [Layer values](#layer-values) * [Viewing metadata](#viewing-metadata) {% endhint %} ## Viewing Data Layers in the Map Viewer To view the list of data layers contained in the project click 'Overlay Layers' or the layer stack icon.\ \ In most projects, layers will be organized into folders. Click the arrow next to a folder to expand the contents. Check the box next to a layer name to add it to the map. In some cases, you can add multiple layers at a time by checking the box next to the name of the folder containing multiple layers.
## Layer Values The layer legend appears in the upper right corner. Layers may be hidden by clicking the Icon and clicking the icon will reveal a menu with various options including ‘Zoom to bounds’, ‘View metadata’, ‘Download…’ (if the download feature is enabled for the layer), ‘Move to front’, ‘Move to back’ and ‘Opacity’.
Some layers will display their attributes when you hover your cursor over them. This may be a feature classification (like the example below), or a pixel value.
## Viewing Metadata To view a layer's metadata (information about the layer), right click and select 'Metadata' from the drop down menu. The information contained in the metadata will depend on what the project administrators chose to include.

View metata using the context menu accessed by right clicking on a layer name.

## Downloading Layers Right clicking on a layer name may also show the option to download the layer. **This option is only available if an administrator has explicitly turned ‘on’ data downloads for this layer.** If you select ‘Download’ from the context menu, you may choose to download the layer in its original format or optional formats. The list of formats will grow over time as we develop this feature.