Once more to Cas Abou - second indigo tank system

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Cas Abou 20150813 008 smallOn August 6 the archaeology sleuths went to Cas Abou to search for the remnants of old houses; I was unable to join that hike; that lead to a lot of regrets because they found a second set of indigo tanks on the plantation of Cas Abou. Luckily they decided to go back for another trip in this area on Thursday Augus 13. This time I was present. After parking our cars at the plantation house we walked via the road to the point closest to the indigo tanks. There we entered the vegetation. Soon we found a foundation of what probably was a drinking tank for cattle. Two rows of lime stones with a corner on one end; the distance between the two rows was too small for a house. That is why we concluded that it probably was a drinking tank.

We continued to the location of a large tanki on the Werbata map and found that tanki easily. Closeby was the second indigo tank system. Two of the three tanks were visible; the third one was, as at most places, under the ground. During the last visit it was already noticed that the building material was different from all other systems that we have found. It looks as if first building blocks had been made from plaster mixed with finger coral. These blocks were then used to build the tank. Another option is that this is not a handmade product but a natural product; conglomerates are often found in the Mid-Curaçao formation and are formed during land slides from the parts of Curaçao that were already above water. Looking at the indigo tank systems we were not able to conclusively determine if it were handmade blocks or naturally formed rocks that were formed to building blocks for this tank. 

There are more differences with the tanks that we have seen before. In my opinion the top tank, the rotting tank, was far larger than in other systems. The second tank, the beating tank seemed much deeper than in other systems. In this case that second tank was later used as a place to leave garbage. We found a lot of bottles and plates in this tank. The opening between the rotting tank and the beating tanks was in reasonably good shape although one side was smashed, probably to re-use the IJsselbricks. Strangely enough the opening between the beating tank and the smallest catch tank was closed with reasonably recent made cement. Maybe the beating tank was re-used as a drinking or water storage tank. All in all an interesting find.

After a break we continued in the direction of a well that was marked on a more recent Kadaster map but not on the Werbata map. We found a deep well with a drinking tank attached; closeby was another water tank. And in the wall of that water tank we saw the same conglomerate mix of plaster and finger coral that we found in the indigo tank. In this case it was used next to limestones, so we concluded that there must have been a source of these conglomerate rocks in this area; so the building blocks of the indigo tank systems were not handmade from finger coral and plaster but formed naturally. That problem was solved.
We took a break next to a small dam.

Our next target was a large rectangular tanki on the Werbata map with a dam next to it. And indeed did we find a large and deep tanki at the marked location. The dam was not as the map showed on one side from stone and the other side earth; it ws mostly an earthen dam with a stone part on one end. And in that stone part we found an IJsselbrick covered with watertight plaster; clearly a re-used part of the indigo tank system.

We walked through the former hofi in the direction of another dam on the Werbata map. Apparently the water level in the hofi was higher in the past. Now the palm trees that were here were mostly gone or dead. 
The dam was no longer visible. It was located where now the road to the beach is. We found a duct to channel the water under that road but no traces of a dam. 
We decided to end the hike by walking over the road to the cars.