Many Of The Hills
Between The Kafue And Loangwa Have Their Sides Of The Form Seen
In Mud Banks Left By The Tide.
The pot-holes appear most abundant
on low gray sandstone ridges here; and as the shingle
is composed of
The same rocks as the hills west of Zumbo,
it looks as if a current had dashed along from the southeast
in the line in which the pot-holes now appear; and if the current
was deflected by those hills toward the Maravi country, north of Tete,
it may have hollowed the rounded, water-worn caverns in which these people
store their corn, and also hide themselves from their enemies.
I could detect no terraces on the land, but, if I am right in my supposition,
the form of this part of the continent must once have resembled the curves
or indentations seen on the southern extremity of the American continent.
In the indentation to the S.E., S., S.W., and W. of this,
lie the principal gold-washings; and the line of the current,
supposing it to have struck against the hills of Mburuma,
shows the washings in the N. and N.E. of Tete.
We were tolerably successful in avoiding the villages, and slept one night
on the flanks of the hill Zimika, where a great number of deep pot-holes
afforded an abundant supply of good rain-water. Here, for the first time,
we saw hills with bare, smooth, rocky tops, and we crossed over
broad dikes of gneiss and syenitic porphyry:
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