Mega Tunnel

000000000000000000000000100000000000000000000000 000000000000000000000111111111111000000000000000 000000000000000000001111111111111100000000000000 000000000000000000111111111111111110000000000000 000000000000000011111111000000111111000000000000 000000000000000111110010000000011111100000000000 000000000000001111100000011100000111110000000000 000000000000011110000000100010000001111000000000 000000000000111100000001001001000000111100000000 000000000001111000000010017100100000011100000000 000000000001110000000100177710010000011110000000 000000000011110000001001777771001000001111000000 000000000011100000010017777777100100000111100000 000000000111100000100178888888710010000011100000 000000001111100001001778888888771001000011110000 000000001111100010017778822288777100100001111000 000000001111000010017778822288777100100001111000 000000001111000010017778822288777100100001111000 000000001111000010017778822288777100100001111000 000000001111000010017778822288777100100001111000 000000001111000010017778822288777100100001111000 000000001111000010017778822288777100100001111000 000000001111000010017778822288777100100001111000 000000001111000010017778822288777100100001111000 000000001111000010017778822288777100100001111000 000000001111000010017778822288777100100001111000 000000001111000010017778822288777100100001111000 000000001111000010017778822288777100100001111000 00000000111100001001f77882228877f100100001111000 00000000111100001001f77882228877f100100001111000 00000000111100001001f77882228877f100100001111000 00000000111100001001f77882228877f100100001111000 ................................................ ................................................ ................................................ ................................................ ................................................ ................................................ ................................................ ................................................ ................................................ ................................................ ................................................ ................................................ ................................................ ................................................ ................................................ .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... .........................000.................... The Great Outdoor What's at the end of this tunnel?