SOUTHEAST ASIA ACTIVITY REPORT SELECTED TRANSPORTATION AND INFILTRATION COMPENDIUM

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04560A005900010016-7
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 110
• Document Creation Date: December 28, 2016
• Document Release Date: January 3, 2000
• Sequence Number: 16
• Publication Date: February 1, 1967
• Content Type: REPORT

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PHOTOGRAPHIC INTEI~~~TATIO.N ru~y R'OsRT.
SOUTHEAST~A~f7~
ACTIVITY REPORT
SELECTED TRANSPORTATION
AND INFILTRATION
COMPENDIUM
Insurgency in Cambodia
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GROUP 1: EXCLUDED FROM
AUTOMATIC DOWNGRADING
AND DECLASSIFICATION
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This document containssnformatian affecting
Lhe national dr3fense of the United States,
within the meaning of `t'itle I8, sections
793 and 794, of the U.S, t: ode, as amended.
Its IransmiKnion ar revelation of its contents
to ar receipt by an unauthorized person. is
prohibited by taw.
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PREFACE
This edition of the Selected Transportation and Infil-
tration Compendium is a special summary of insurgency
in Cambodia. The information represents a comparative
study by NPIC of aerial photography over a two-year
period.
The report is divided into eight geographic sections
representing areas of concentrated insurgent activity.
IJach section is introduced by a locator map, and contains
photographs, mosaics, and smaller scale maps as aids
to the discussion of the area.
A sectional index of mission references, NPIC briefing
boards, and NPIC cable references is included on the final
pages of this report.
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INTRODUCTION
This report is intended to provide a survey of communist insurgent activity
i=~: eastern Cambodia wit1~ nhoto~rsphic documentation of those areas exhibiting
the highest degree of concentration and current siren i`'icance.
gore than 200 areas of probable insurgent activity have rota been identified
and/or confirmed by NPIC inside Cambodia. The scope of this activity in 1966
alone expanded quite rapidly as increased press~_cre from allied military operations
made such a sanctuary necessary and the unusually prolonged monsoon season severely
interrupted the f]_ow or material from North Vietnam throueh Laos.
As allied operations continue in 1967, particularly along the ill-defined,
unpopulated, and remote northeast border areas of Cambodia, the communist forces
could expand their exploitation of Cambodia for supplies, storage, medical care,
training, rest and rehabilitation, and secure routes for the infiltration of
personnel from North Vietnam.
With the communist road net completed in southern Laos, and a subsequent
rapid build-up and deployment of American forces in South Viet lam in late 1965
and early 1966, subtle changes in topography and social patterns were observed
on aerial photography throughout those eastern Cambodian borde? areas adjacent
to Laos and South Vietnam. These changes were noted after a dstailed comparison 25X1A
of older data base photography with recent aerial photography
utilizing a 112-8 camera system which provided better resolution. This compari-
son revealed signatures identical to those of known communist activity observed
in Laos and South Vietnam during a similar period,
25X16 Detected Areas of Insurgency
There has been a recent rapid development of a probable i:surgent base area
along the southern border of Mondulkiri and Kratie provinces, :ambodia, extending
~~rom the northeast fringes of war-zone C, eastward to the Dak ~~m/0'Raing area
(See Section VI), Within this area, photographic signatures hrell_
concealed trails i?ith the corrununist road net i_n 7,a,os. Ex_amr~le: of this activity
are provided. on Figures 20, 21, a.nfi 22,
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. FIC L-6948 (2/67)
f=1GURE 20. PROBABLE INSURGENT FNCAMPMENT, TRI-BORDER AREA, CAMBODIA
N PIC L-6949 (2/671
FIGURE 71. PROBABLE INSURGENT ENCAMPMENT, TRI-BORDER AREA. CAMBODIA
N PIC L-6950 12!871
FIGURE 22. PROBABLE INSURGENT ENCAMPMENT, TRI-90RDER AREA CAMBODIA
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SECTION II
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'T'here is increasing evidence that the Tonle San (river) has became a major
transportation artery in a probable communist logistics net extending from
Stung Treng to the Cambodia~South Vietnam border areas adjacent to Duc Co, South
Vietnam. A total of 28 probable insurgent facilities, including liaison stations,
ea~.campments, storage areas and. transshipment points, have been identified in the
vicinity of the river between Virachei and the border.
Unlil~e the Tonle Kong, the Tonle San is shallow and more susceptible to
extreme low water periods. Motorized river craft have been observed. navigating
the river northeast of Stung Treng during rising intermediate and high water
stages, but navigation is probably also curtailed during the 20 to 30-day extreme
high water period.
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ti
b
~
ons
serva
Although no statistics are available on motorized river craft o
ures are available on the
d accurate fi
i
g
o
25X1D during the per
l
t
t
r
o
a
number of sightings between A maximum one-day
of 18 motorized. river craft was observed. between Virachei and 1~4-OlN 107-1~+E,
25X1D approximately 7 nm west of the South Vietnam border. Throughout the latter
t of _ a substantial increase in water-borne transportation on this 25X1D
'~
par
segment of the Tonle San was observed. as compared. to a similar period.:i.n _
(See "Detailed. Analysis of Motorized. River Craft," Section I, for estimated.
dimensions and. capacities of these craft.)
There have been only three recorded. observations of motorized. river craft 25X1D
on the western half of the Tonle San during the period.. A
single craft was observed. 16 nm west of Virachei on and. two craft ~+ 25X1 D
nm west on When compared. with the distribution of sightings between 25X1D
Virachei and the border as depicted. on the accompanying map, the conclusion
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that Virachei is a major redistribution point is inescapable. 'Three newly
constructed storage-type bui.ld.ings were observed. dispersed. along the southern 25X1D
ban1~ of the river, approximately 0.5 nm west of Virachei on In
addition, Route 19~-+ east from Siempang (d.iscussed in Section I) and. north
from Route 19 at Bung Lung show evidence of increasingly heavy vehicular activity.
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A probable transs't}i:~ent loin ~ ,