Photogrammetric raising Cave of Askondo
During September and October 2015, Dogram made the photogrammetric raising of the current state of the Cave of Askondo (Mañaria) for the Department of Culture and Euskera of the Floral Deputation of Bizkaia. It is about a prehistorical sanctuary of Clovis Point chronology (23.000 B.P).
We documented the sector A of the cave, which has five panels whose majority are paintings even if there are also engravings, and archaeological surveys made in the floor of the vestibule. In addition of the images and the support points in UTM ETRS and, because they are paintings, we made a register of the colour management.
From the data acquisition in the area, we made a selection of photographs down to 1.825 useful images to the rebuilding of the totality of the cave more than 507 images with details of the panels. Then we made the processing of the photographs that includes the management of the true colour, the three-dimensional restitution, grading and the obtainment of dense and textured three-dimensional models. From them we made the following documentation:
1. Virtual replica of the cave
2. High-resolution virtual replica of every individualised panel: the textures have a correct management of the colour, so they are truth to reality.
3. 3D graphic documentation
Orthophotograph of transversal raised-section: four raisings. Scale 1:10
Four othophotographs of raised-sections by cutting plans of the longitudinal profile. Scale 1:10
Orthophotograph of the floor. Scale 1:10
4. Topography of the cave
– Cartography of the floor
– Cartography of the roof
– Cartography of heights
– Cartography of heights top-roof