1. The crater is above sea level, about above the surrounding basalt lava plains . 2. The lower unit is heavily tectonized and embayed by lava plains and flows. 3. The park by this time was a relatively featureless and large lava plain . 4. Most are partly buried by younger lava plains , making their sources difficult to identify. 5. The Hell's Half Acre lava plain is home to a variety of plant species. 6. Lava plains support alkali sagebrush, bluegrass, squirreltail, and Idaho fescue.7. The diametre of the Brena maar is and Jag�ey, rising above a high lava plain . 8. This formation has no other notable features, and its albedo matches the surrounding lava plain . 9. Barnafoss is near Hraunfossar which burst out of Hallmundarhraun which is a great lava plain . 10. The southern and eastern shores are flat lava plains .
