Portland
,
Oregon
,
February
____________________
,
a
mountain
begins
to
____________________
and
for
a
contractor
and
his
son
there
is
only
one
option
,
get
out
of
the
way
fast
.
?
Get
out
of
the
way
!
?
?
Oh
my
God
!
?
They
had
just
gone
head
to
head
with
one
of
nature's
most
____________________
and
____________________
forces
,
a
landslide
.
The
surface
of
our
planet
is
constantly
____________________
itself
and
landslides
are
a
major
reason
.
they
____________________
wherever
the
____________________
is
____________________
by
rain
or
tugged
by
gravity
.
It
can
be
a
____________________
or
a
raging
river
of
____________________
,
but
wherever
the
ground
____________________
it
can
result
in
massive
destruction
.
On
average
,
landslides
kill
more
than
____________________
people
every
year
around
the
world
.
They
can
____________________
down
without
warning
and
travel
for
several
miles
.
In
the
US
,
landslides
____________________
in
all
50
states
but
some
places
are
more
dangerous
than
others
.
Landslides
usually
follow
other
natural
disasters
like
volcanic
eruptions
,
____________________
,
wildfires
,
storms
and
____________________
.
Steep
____________________
are
obvious
places
for
landslides
as
are
areas
that
have
been
____________________
by
landslides
before
.
But
they
also
frequently
occur
where
people
have
radically
altered
the
____________________
.
____________________
,
strips
of
vegetation
,
slopes
modified
for
roads
and
buildings
,
and
as
our
cities
and
towns
____________________
further
,
landslides
become
more
frequent
and
more
destructive
.
In
____________________
,
disaster
struck
the
southern
Californian
suburb
of
Laguna
Niguel
.
Few
realized
that
the
____________________
-
____________________
hill
____________________
them
could
____________________
.
The
ground
eroded
by
heavy
rains
began
to
give
way
and
the
houses
came
crashing
down
.
Seven
were
seriously
____________________
and
five
of
them
____________________
down
the
cliff
face
.
Though
the
ground
cracked
and
the
earth
____________________
,
no
one
was
____________________
.
The
residents
of
Laguna
Niguel
were
lucky
,
they
still
have
their
town
.
The
following
year
in
Venezuela
,
torrential
rains
____________________
____________________
landslides
across
a
____________________
-
mile
wide
strip
of
____________________
in
the
state
of
Vargas
.
Communities
were
____________________
under
waves
of
mud
and
debris
.
It
is
estimated
that
30
000
people
were
killed
,
around
____________________
of
the
area's
population
.
Accurate
death
tolls
were
difficult
to
establish
because
so
many
people
vanished
under
the
mud
or
were
____________________
out
to
sea
.
Though
the
catastrophe
was
on
a
massive
____________________
,
it
is
by
no
means
unique
.
Such
disasters
have
happened
before
and
will
____________________
again
.
As
long
as
the
Earth
continues
to
move
,
people
will
live
with
the
____________________
of
landslides
.
