3. If the Map tools pane is not expanded, in the map viewer, click the Map Tools button.
4. On the Map Tools pane, click the More Tools button and then select Highest Point. The Calculate Highest Point dialog box appears.
5. Click the Select Area of Interest field and draw a polygon over the map.
6. Click Calculate. The highest point is highlighted on the map and its coordinates appear in the Calculate Highest Point dialog box.