English: Scattered flat-lying basaltic lava flows with fresh pahoehoe surfaces occur near Tlevak Strait (lower right) and on the SW end of Suemez Island. The largest area of Quaternary basaltic rocks is located north of Trocadero Bay, the large embayment on the southern side of Suemez Island. Outcrops are located on western Prince of Wales Island (on the roughly rectangular peninsula NE of the northernmost point on Dall Island) and on nearby islands in Tlevak Strait. Quaternary basaltic rocks also occur along Bobs Bay on the NW side of Dall Island.