Signpost rock card

Directions
From the Temple Nexus waypoint:
 * 1) Down
 * 2) Down
 * 3) Right
 * 4) Enter teleporter
 * 5) Follow path to a checkpoint
 * Up
 * 1) Enter left teleporter
 * 2) Down
 * 3) Right
 * 4) Right
 * 5) Right

The chest is in an enclosed area on the bottom right of the screen. Requires the swap upgrade.