These are the locations of the flags and sol citadels
There are four flags hidden throughout the game. These flags occur in areas 1,
3, 5, and 6. All flags are along a horizontal line across the terrain. The
only way to uncover a flag is to bomb it so you will have to lay a string of
bombs along the entire horizontal line. This basically means moving up
quickly, dealing with enemies quickly, and dropping your bombs quickly. Once a
flag is uncovered, you must fly over it to get the benefits from it.
+--------+
| FLAG 1 |
+--------+
The first flag is located in the first river you encounter after you start the
game. Look for the three Grobdas in a row. Just above them is a river that
cuts horizontally across the terrain. Just bomb the river from left to right
and around the bank closest to you. The flag should appear.
+--------+
| FLAG 2 |
+--------+
After you get past the plates, look up and to the right. There is a little
lake with a small river feeding into the ocean. Start in the middle of the
lake and bomb toward the little river. The flag should appear around where the
river dumps into the ocean.
+--------+
| FLAG 3 |
+--------+
When you cross the first ocean, you will eventually see a dock/harbor at the
top. The flag is located around the horizontal line that the longest pier
projecting out is part of. You will need to quickly bomb that entire length to
find and get the flag before the bottom scrolls your Solvalou too far up.
+--------+
| FLAG 4 |
+--------+
You will see a big bird picture on the desert. At the lowest point of its
tailfeathers (in the lower right corner), start to bomb horizontally from right
to left. The flag will appear.
____________________
/ 8.3 Sol Citadels /__________________________________________________________
--------------------
These structures require you to bomb them once to cause them to surface. They
look like large storage tanks or grain silos. You then need to bomb them again
to destroy them. You have a potential to collect several hundred thousand
points by taking out these structures. They come in groups of 1, 4, or 8.
Unlike flags, these structures are always in the same place. There are six
sets of Sol Citadels.
+-----------+
| FIRST SET |
+-----------+
One in area 2. When you see the three Grobdas in a row on the road, start
laying bombs in the area around the cul-de-sac below the last tank in a right
and diagonal-down point. The citadel will be even with the cul-de-sac.
+------------+
| SECOND SET |
+------------+
One in area 3. When you see the Garu Bara, go to the left of the Garu Bara and
start bombing. This is also the area that the second flag can be found.
+-----------+
| THIRD SET |
+-----------+
Four in area 9. There is a clear area right before you tangle with the second
Andor Genesis Mothership. Where the road splits around the woods, start to lay
bombs a little below the bottom edge of the road that goes to the right. You
should uncover four Sol Citadels.
+------------+
| FOURTH SET |
+------------+
Eight in area 13. At the point the desert ends, there is a little grass, then
the air field starts. Use the birds leg as a reference and fly straight up.
When the bombsight glows, start bombing. This will be the lower left Sol
Citadel of the group which is arranged in two rows of four citadels. You will
be hard pressed to get all eight citadels.
+-----------+
| FIFTH SET |
+-----------+
Four in area 14. After the plates roll by, look for where two roads merge into
one road. At the top edge of the slanted right hand road, start dropping bombs
to uncover some more citadels.
+-----------+
| SIXTH SET |
+-----------+
Four in area 15. Look for a forest on the left side. There will be a small
clearing and then a river. Bomb the small clearing to bring the citadels up.
There will be very intense ground fire in this location so be especially
watchful.
I got this from a FAQ at Gamefags by War Doc , Credit to him.
