Lines from Hut to Hut

I can't tell you what these buildings are for the life of me. I captured this design while in the San Juan Islands near Roche Harbor at a place called English Camp.

Here's a bit of info on it from Wikipedia if you are interested:

San Juan Island National Historical Park, also known as American and English Camps, San Juan Island, is a U.S. National Park on San Juan Island in Washington, made up by the sites of the British and U.S. Armies' camps during the Pig War. Both of these camps were set up in 1859 as response to a border dispute triggered by the killing of a pig. The camps were occupied for 12 years, until the Treaty of Washington was signed, negotiated by Kaiser Wilhelm I of Germany. The British abandoned their camp in November 1872, while the American camp was disbanded in July 1874.[3]
The site was designated a National Historic Landmark in 1961,[1] and listed on the National Register of Historic Places in 1966.[2]
The park is divided into two parts; an American Camp where US soldiers were stationed, and an English Camp, where the British Royale Marines established a garrison. English Camp is the only part of a US national park that commemorates an English military site and the only one that flies the British Union Flag.