{
 "title": "mars.olympus_mons on CTX 20 m: 12 x 12 km at the current anchor 18.4641N 226.1554E, north up. Orange: black-rock outcrop band along the lip.",
 "polys": [
  {
   "label": "jagged black-rock band (Ka'u kit), fading W into sand",
   "pts": [
    [
     -1800,
     6000
    ],
    [
     2600,
     6000
    ],
    [
     -600,
     -6000
    ],
    [
     -3600,
     -6000
    ]
   ],
   "color": [
    255,
    140,
    60,
    255
   ]
  },
  {
   "label": "caldera wall: CTX spur-and-gully + Kilauea bench modules",
   "pts": [
    [
     2700,
     6000
    ],
    [
     6000,
     6000
    ],
    [
     6000,
     -6000
    ],
    [
     -400,
     -6000
    ]
   ],
   "color": [
    80,
    200,
    255,
    255
   ]
  }
 ],
 "marks": [
  {
   "x": -3600,
   "y": -1500,
   "label": "Hub 1 - rim plain bench",
   "color": [
    120,
    255,
    120,
    255
   ]
  },
  {
   "x": -3000,
   "y": 4000,
   "label": "Hub 2 - north flow bench",
   "color": [
    120,
    255,
    120,
    255
   ]
  },
  {
   "x": 1300,
   "y": 300,
   "label": "Deposit: Ti-basalt ledge 400 m below lip",
   "color": [
    255,
    220,
    60,
    255
   ],
   "shape": "diamond"
  }
 ]
}