{
	"feature": "tfg:nether/spikes/gneiss_spikes",
	"placement": [
		{
			"type": "minecraft:count",
			"count": 256
		},
		{
			"type": "minecraft:count",
			"count": 2
		},
		{
			"type": "minecraft:in_square"
		},
		{
			"type": "minecraft:height_range",
			"height": {
				"type": "minecraft:uniform",
				"max_inclusive": {
					"below_top": 5
				},
				"min_inclusive": {
					"above_bottom": 36
				}
			}
		},
		{
			"type": "minecraft:block_predicate_filter",
			"predicate": {
				"type": "minecraft:all_of",
				"predicates": [
					{
						"type": "minecraft:matching_blocks",
						"blocks": "minecraft:air"
					},
					{
						"type": "minecraft:matching_block_tag",
						"offset": [ 0, -1, 0 ],
						"tag": "forge:stone"
					}
				]
			}
		},
		{
			"type": "minecraft:biome"
		}
	]
}