Here's the zone map for Blackhook Badlands. It uses the same image as the Sodden Archipelago overland zone.
Code:
<ImageStyle Name="exp21_dun_sodden_islands_02_solo" displayname="Sodden Archipelago: Blackhook Badlands [Solo]" zonerect="-1321, -917, 1311, 1034">
<ImageFrame Source="images/maps/map_exp21_rgn_sodden_islands.dds" SourceRect="0,0,800,600" />
</ImageStyle>
<ImageStyle Name="exp21_dun_sodden_islands_02_easy" displayname="Sodden Archipelago: Blackhook Badlands [Heroic I]" zonerect="-1321, -917, 1311, 1034">
<ImageFrame Source="images/maps/map_exp21_rgn_sodden_islands.dds" SourceRect="0,0,800,600" />
</ImageStyle>
<ImageStyle Name="exp21_dun_sodden_islands_02" displayname="Sodden Archipelago: Blackhook Badlands [Heroic II]" zonerect="-1321, -917, 1311, 1034">
<ImageFrame Source="images/maps/map_exp21_rgn_sodden_islands.dds" SourceRect="0,0,800,600" />
</ImageStyle>