I have found two types of "lavash" in Russia -- Georgian and Armenian. Georgian lavash is more or less like Central Asian flatbread -- relatively flat leavened bread. Armenian lavash, on the other hand, is like a giant tortilla. The picture I have here is of Armenian lavash made in a tandir (clay oven), so it has darkened spots from the high heat of the oven. Lavash not made in this way is more homogenously white and looks exactly like a tortilla (although larger)! In fact, it is made with flour, water, and salt, just like a tortilla! Versions of lavash are also eaten in Iran, Turkey, Georgia, and Azerbaijan.
Although lavash is often eaten with kebabs as a kind of wrap, I personally enjoy mine by itself with a little melted butter spread on top. They could also be used as tortillas to make Mexican food, but I haven't tried that here, since my favorite part of Mexican food is cheddar cheese and is pretty difficult to come by in Russia. The lavash dries out quite quickly, though -- faster than tortillas -- so you have to eat it fast!