The "16,10" jungle, in addition to the 125-room "main" jungle (with the 
player start and all of the treasures), also has 19 other "mini-jungles":
1 one-location "Mobil ave" jungle, 1 two-location nano-jungle, 2 four-location
micro-jungles, and 15 8-location mini-jungles.  Each line is a sub-jungle:

d3 (Watch out for that log!  Only mini-jungle w/o ladder room)
86 39
4a 1f 75 a0 (can be used for crocodile training)
c2 5b 97 b1 
01 27 36 45 7a 89 98 be
03 32 55 7b 90 a7 c9 de
05 25 26 3e 78 7e 88 09
07 35 3a 49 79 80 9e a6
c8 15 22 5e 70 7f a5 0b 
c5 11 23 56 72 8b bf d8
cb 13 52 73 a3 d0 d5 df (watch out for that "cb" log!)
c0 17 4b 5a 71 9f a2 b5 
46 19 21 3f 76 85 8a b8 (cool, has multiple ladder rooms)
42 1b 5f 77 95 a1 b0 ca
87 31 3b 59 82 96 b9 c6 (this is the "game select" training mini-jungle)
c7 33 51 83 92 bb d6 d9
47 37 41 81 99 9a b6 ba (also has multiple ladder rooms)
c1 43 57 91 9b b2 b7 da
c3 53 93 b3 d1 d2 d7 db (watch out for that "c3" log!  Only 1 ladder room)

The byte that determines the player's starting location when the console is
turned on is $F005 in pitfallT.rom.  The starting location when "game
reset" is pressed is $F6C0; for "game select" it's $F6CA.