35
EFGH
EFGH
1
2
4
5
3
40
40
36
36
NORTH AMERICA
M
o
s
q
u
i
t
o
C
o
a
s
t
C
or
di
lle
ra
de
(^) T
al
am
anc
a Panama
Canal
G
re
at
e
r
A
nt
illes
Caribbean
Sea
Golfo
de
Chiriquí
Gulf
of
Darien
Golfo
de
Panamá
Isla del
Rey
HAITI
JAMAICA
Islas del Maíz
I. de San Andrés
I. de Providencia
Cayos Miskitos
Bajo Nuevo
Islas Santanilla
(part of Colombia)
(part of Colombia)
(part of Colombia)
(part of Honduras)
PANAMA
COSTA^
RICA
C
O
L
O
M
BI
A
PANAMA CITY
Colón
David
Limón
Las Tablas
Penonomé
Santiago
Cartago
Bluefields
Chitré
Each chamber at Gatun Locks on the Panama Canal
is 110 ft (33 m) wide and 1000 ft (303 m) long.
The locks took four years to build and required
2 million cubic yards (1.5 million cu m)
of concrete.
The Great Blue Hole in Lighthouse Reef, a submerged
cave some 1000 ft (303 m) in diameter and
400 ft (120 m) deep, was originally explored by
Jacques Cousteau, co-inventor of the aqualung.