world/regions/rift_valley/page/rift_valley.secondary.json
{
"columns": [
{
"name": "footfall_surface_secondary",
"values": {
"bale_mountains_astral_threshold": "stone",
"gorge_rim_bench": "",
"juhoansi_camp": "",
"lake_eyasi_shore": "",
"olduvai_gorge": "gravel",
"rift_lakes_system": "water-shallow",
"san_rock_art_panels": "",
"serengeti_plain_margin": ""
}
}
]
}