"A beautifully symmetrical volcano on the Kamchatka Peninsula in Russia. Look at those weird red cinder cones on the flanks."

"USS Arizona and memorial, Pearl Harbor."

"This is my favorite. It's a marina near Milwaukee, Wisconsin (USA). The winter ice is in the process of breaking up. I don't know why, but this is very visually appealing to me."

"Underwater tidal channels of the Wadden Sea of Denmark."

"A breakwater and lighthouse on one of the Great Lakes. I can't remember where. Notice the circular pattern of waves reflecting off the structure."

"Still the Wadden Sea. Look at that tidal current rippin through there. This one is spooky."

"Alpine glaciers spilling out spreading across a flat plain. This is in SE Alaska."

"A volcano in the Great Rift Valley in Tanzania. It's tall enough to have its own, wetter micro climate, hence the green."

"High vs. low tide on a Normandy beach."

"SE Alaska, multiple alpine glaciers flowing together."

"A lonely little gun emplacement that used to guard the entrance to Amsterdam. "

"These are impact craters in the Canadian Shield, the oldest continental crust of the North American plate. Because it’s been tectonically inactive for a long time and continental glaciers removed most of the topsoil, many craters are visible. This lake is called Lac a l’Eau Claire. There is a lot of evidence that the lake is formed by 2 impact craters. It was originally thought that the 2 impacts were formed at the same time by an asteroid that split or was a binary asteroid. There is some very compelling evidence that these are 2 different impacts, ~200 million years apart. It might seem like a million to one shot that 2 impacts could be so close, but we see many overlapping craters on other planets. The low probability thing for me is that the craters were both preserved and exposed."

"A push boat and barges stirring up the bottom of the Tombigbee River in Alabama (USA)."

"A fort in the Netherlands."

"Another volcano in the Great Rift Valley with a micro climate and a very asymmetrical crater, much like Mt. St. Helens."

"Irrigated fields in west Texas. The colors here are awesome. I'm guessing the crops were recently harvested or recently plowed under and we're seeing the soil color. In my experience, harvested corn or wheat fields aren't this orange/red. Any ideas? The white specks are oil pads connected by little roads. This land is certainly being utilized."

"Above is the coolest delta I've ever seen. It's formed by the William River, which flows through Athabasca Sand Dunes Provincial Park and into Lake Athabasca, Saskatchewan CA. This river has recently become my favorite river, because we share a name. The left side of the image seems to be while the lake is frozen but the river is not. The bands that sort of parallel the shoreline look like cheniers."

"After the pretty bad performance of the US in the war of 1812, the federal government realized some things. They needed to maintain a larger, federally controlled, standing army. The states militias were just not up to the task when it came to real war. They also needed to have a larger navy. Privateers weren’t all that great either. Finally, they needed to fortify the border. The royal navy was able to sail all up in our waterways to deploy land forces. Since half of the US border was coastal, this meant lots of coastal forts to shoot at ships. Across the channel is Fort Morgan, a beautiful star fort. I’ve never been to this one, but it looks to be in very good shape. You can see the retrofitting of more modern gun emplacements."

"An anticline somewhere in Iran with a series of alluvial fans on the south side. I really like the blue color of the formation ringing the center of the anticline. I need to go there and get a sample. You can see the colors of the formations reflected in the fan."

"A beautiful wave-dominated delta in Brazil."

"I read about this one on a forum. I think it's true. The GPS point is the location of the German battleship, Tirpitz when it was sunk by British bombers on 11/12/1944. The Tirpitz was the sister ship of the famous Bismarck. It was also the last serious German surface naval threat. The RAF and Royal Navy played a long cat and mouse game with the Tirpitz as it hid out in Norwegian fjords. It was eventually located and Lancaster bombers attached at high altitude with huge bombs. The 3 round holes (2 in the water, 1 on land) are likely craters from missed bombs. They don't make sense geologically"

"Preserved craters from the D-Day bombardment of German fortifications at Pointe du Hoc, Normandy."

"This is a random place in the Ontario, CA. I think the colors are very nice."

"A huge pile of some black stuff due west of Douglas, Arizona. It looks like a spoil pile from a mine, but I don't see evidence of a mine nearby. Any ideas?"

"A very isolated island off the coast of Germany. What's that? My first thought was it had to be ruins from a very old fortification or something. Turns out no. This little island was man made back in 1989. The features were put there to prevent wind erosion."

"A strange shaped clearing in the Punjab province of India. I wonder what that is."

"A cool delta building out into Ayyakum Lake, Tibet. The river is unnamed on Google. It is fed by snowmelt from mountains to the south. You can see some isolated sand dunes NW of the river. There is a name for this type of dune, but I can't remember what it is. They happen when there is enough wind to migrate dunes, but not enough sand."

"I cheated a little with this one. I’ve actually been to this place. It’s an island in Penobscot Bay, Maine, USA. We see 2 very distinctive rock bodies contacting one another. My guess is that the darker rock intruded into the lighter rock due to nearby volcanic activity. Nearby Vinalhaven Island is a very old volcano, and the direction kind of fits."

"The Rio Grande River entering the Gulf of Mexico."

"A sugarcane field burning in south Louisiana, USA. This is commonly done to remove all of the leftovers from harvesting. Sugarcane is a grass so there is a lot of organic material leftover."