scoreboard objectives add tntexplode dummy tntexplode
scoreboard players add @s tntexplode 1
execute @s[scores={tntexplode=79}] ~ ~ ~ fill ~-10 ~-10 ~-10 ~10 ~10 ~10 end_stone 0 replace grass
execute @s[scores={tntexplode=79}] ~ ~ ~ fill ~-10 ~-10 ~-10 ~10 ~10 ~10 end_stone 0 replace dirt
execute @s[scores={tntexplode=79}] ~ ~ ~ fill ~-10 ~-10 ~-10 ~10 ~10 ~10 end_stone 0 replace stone
execute @s[scores={tntexplode=79}] ~ ~ ~ fill ~-10 ~-10 ~-10 ~10 ~10 ~10 end_stone 0 replace sand
execute @s[scores={tntexplode=79}] ~ ~ ~ fill ~-10 ~-10 ~-10 ~10 ~10 ~10 end_stone 0 replace gravel