21. The ouvrage consists of one entry block , two infantry blocks and three artillery blocks at an altitude of. 22. The ouvrage consists of one entry block , one infantry block and one observation block at an altitude of. 23. The ouvrage consists of one entry block , one infantry block and one artillery block at an altitude of. 24. The ouvrage consists of one entry block , three artillery blocks and one observation block two kilometers west of Modane. 25. The ouvrage consists of one entry block , one infantry artillery block and one observation block at an altitude of. 26. A two-story entry block projects from the center of the north elevation, and is flanked by porches. 27. The ouvrage consists of one entry block , one infantry block and one observation block, with an unarmed exit block. 28. The ouvrage consisted of one entry block , two artillery blocks, two infantry blocks and one observation block facing Italy. 29. After the header, the Partition Entry Array describes partitions, using a minimum size of 128 bytes for each entry block . 30. Entry blocks 8 and 9 serve the main ammunition magazine, utility area ( " usine " ) and underground barracks.
