1. Preheat oven to 325 degrees F.
2. Oil the bottom and sides of an 8 inch springform pan (or use a similar sized square or round pan).
3. In a medium bowl, whisk together the flour, sugar, baking powder, sea salt, baking soda, cinnamon, and ginger.
4. In a large bowl, mix pumpkin, eggs, olive oil, and maple syrup until well blended. Add the dry ingredients and mix just until thoroughly combined.
5. Transfer the batter into prepared pan and bake for 50-55 minutes, or until a cake tester inserted in the center comes out clean. Cool for 10 minutes before using a knife to loosen the sides of the pan, then removing it.
6. While the cake is cooling, cook 1 cup maple syrup over heat for 7-8 minutes, or until it thickens/reduces slightly. Let it cool for a minute or so, the drizzle over the cake. Serve warm or at room temperature: the maple glaze will harden as it cools.