Puerto Venus: massive debris flows in Colombia yesterday

The municipality of Narino in Antioquia in Colombia was affected by large debris flows, triggered by heavy rainfall, late last week.  Worst affected appears to be the village of Puerto Venus, which was struck by a large debris flow, destroying 12 houses.  The debris flow was captured in two remarkable videos that have been posted to Youtube.  This one shows the debris flow from one side of the river:-

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And this one shows the same debris flow from the other side:-

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El Colombiano has a detailed article (In Spanish, though Google Translate does a reasonable job) about the landslide, together with some images of the events. It reports that the inhabitants of Puerto Venus were warned that the landslide was coming by the inhabitants of a village upstream at El Piñal.  The suggestion is that the river had been blocked by a landslide near to El Piñal, and that the debris flow was then triggered by heavy rainfall.  I am unsure as to whether this implies that the earlier landslide was a valley-blocking event, and that the debris flow was the result of a breach.

This image, from El Colombiano, shows the aftermath of the debris flows:-

The aftermath of the debris flows at Puerto Venus in Colombia. Image vi El Colombiano

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Back in November, Caracol.com reported that a landslide had developed in the vicinity of Puerto Venus.  The Google Translate version (lightly edited) suggests that: