turtle.select(1)

write ("Enter the area size: ")
local mainloo = read()
local mainloop = tonumber(mainloo)
print ("Selected area is: ",mainloo,"x",mainloo)
write ("How deep do you want to dig? ")
local deep = read()
local depth = tonumber(deep)
local num1 = 0
local volume = ((mainloop*mainloop*depth)-depth)
print("The total volume is :",volume,"  blocks")

while (num1 < depth) do

turtle.select(1)

local loop4 = 2
local limiter = 3
while (loop4 < mainloop)
do

local bigloop = 0

while (bigloop < 4)
do

local length = limiter
local loop = 1

turtle.turnLeft()

while (loop < length) 
do
while (turtle.detect())
do
turtle.dig()
end
turtle.forward()

loop = loop + 1
end

bigloop = bigloop + 1

end

local slots = 17
local loop2 = 1

while (loop2 <slots)
do
turtle.select(loop2)
turtle.drop()
loop2 = loop2+1
end 
if(turtle.getFuelLevel() < 50000)
then
turtle.turnRight()
turtle.select(1)
turtle.suck()
turtle.refuel()
turtle.turnLeft()
end

local level = turtle.getFuelLevel()
local limit = turtle.getFuelLimit()

print ("Fuel: ",level,"/",limit)

limiter = limiter+1
loop4 = loop4+1
end


turtle.select(1)
turtle.dig()
turtle.turnRight()
turtle.select(2)
turtle.dig()
turtle.turnLeft()


turtle.digDown()
turtle.down()

turtle.dig()
turtle.select(1)

turtle.place()
turtle.turnRight()
turtle.dig()
turtle.select(2)
turtle.dig()
turtle.place()
turtle.turnLeft()

local looper = 1
while (looper < 17)
do
turtle.select(looper)
turtle.drop()
looper = looper+1
end

num1 = num1 +1
end

print ("Finished")

local looping = 0
while (looping < depth)
do 
turtle.up()
looping = looping +1
end

turtle.select(1)
turtle.suckUp()
turtle.place()
turtle.turnLeft()
turtle.forward()
turtle.forward()
turtle.select(2)
turtle.suckUp()
turtle.turnRight()

looping = 0
while (looping < depth)
do
turtle.dig()
turtle.place()
turtle.down()
looping = looping+1
end

turtle.turnRight()
turtle.forward()
turtle.forward()
turtle.turnLeft()