We went to the Skaftfell art exhibit, which had about a dozen quirky collections. We also hiked to Tvísöngur, which is a 5-dome structure with interesting acoustics.
We had time for a 2-hour hike, so stopped at the visitor center and were recommended Vestdalseyri, a hike up a large stream with cascades and waterfalls that starts on the north side of the bay near old ruins. So we did it, and it was the nicest Iceland hike so far.
Next we drove inland back through fog to a 3-mile uphill hike to the 386-foot-high 35-foot-wide Hengifoss waterfall cascading over volcanic bedrock with red bands.
We were planning to food shop, but we can go a few more days. Dinner was ramen noodles with egg.