fgdata/Materials/regions/ascension.xml

<?xml version="1.0"?>
<PropertyList>
  <name>Ascension Island</name>
  <area>
    <lon1>-14.9</lon1>
    <lon2>-13.6</lon2>
    <lat1>-8.5</lat1>
    <lat2>-7.4</lat2>
  </area>

  <condition>
    <equals>
      <property>sim/startup/season</property>
      <value>summer</value>
    </equals>
  </condition>

  <material>
    <name>Scrub</name>
    <texture-set>
     <texture>Terrain/lava1.png</texture>
     <texture n="12">Terrain/deciduous-hires.png</texture>
     <texture n="11">Terrain/lava_drylake.png</texture>
     <texture n="13">Terrain/rocks-lava.png</texture>
     <texture n="15">Terrain/tundra-hawaii.png</texture>
    </texture-set>
    <parameters>
     <dot_density>0.3</dot_density>
     <transition_model>0.7</transition_model>
     <hires_overlay_bias>-0.1</hires_overlay_bias>
    </parameters>
    <xsize>2000</xsize>
    <ysize>2000</ysize>
    <light-coverage>10000000.0</light-coverage>
    <wood-coverage>50000.0</wood-coverage>
    <tree-texture>Trees/tropical-alt.png</tree-texture>
    <tree-varieties>8</tree-varieties>
    <tree-range-m alias="/params/forest/tree-range-m"/>
    <tree-height-m>20.0</tree-height-m>
    <tree-width-m>12.0</tree-width-m>
    <shininess>2.5</shininess>
    <rolling-friction>0.1</rolling-friction>
    <friction-factor>0.7</friction-factor>
    <bumpiness>0.1</bumpiness>
  </material>

  <material>
    <name>Grass</name>
    <name>Airport</name>
    <name>AirportKeep</name>
    <name>Greenspace</name>
    <texture>Terrain/lava3.png</texture>
    <xsize>125</xsize>
    <ysize>125</ysize>
    <light-coverage>4000000.0</light-coverage>
    <diffuse>
     <r>0.93</r>
     <g>0.95</g>
     <b>0.93</b>
     <a>1.0</a>
    </diffuse>
    <specular>
     <r>0.1</r>
     <g>0.12</g>
     <b>0.1</b>
     <a>1.0</a>
    </specular>
    <shininess>1.2</shininess>
    <solid>1</solid>
    <friction-factor>0.7</friction-factor>
    <rolling-friction>0.1</rolling-friction>
    <bumpiness>0.1</bumpiness>
    <load-resistance>1e30</load-resistance>
  </material>



</PropertyList>