You're looking at an image layering
markers.
Use the
and
arrows to move between highlighted image regions.
Click
to return here to an overview of the full image.
Use to zoom out
and to zoom in.
To share your own highlighted image regions,
click to
point an arrow at a small feature,
click to select
a feature with a custom shape, and
click to share a
boundary around a rectangular region.
Click to open a
new window with shared navigation.