Context : Galaxy superclusters are the largest systems in the Universe that can give us information about the formation and evolution of the cosmic web . Aims : We study the morphology of the superclusters from the BOSS Great Wall ( BGW ) , a recently discovered very rich supercluster complex at the redshift z = 0.47 . Methods : We have employed the Minkowski functionals to quantify supercluster morphology . We calculate supercluster luminosities and masses using two methods . Firstly , we used data about the luminosities and stellar masses of high stellar mass galaxies with \log ( M _ { * } / h ^ { -1 } M _ { \odot } ) \geq 11.3 . Secondly , we applied a scaling relation that combines morphological and physical parameters of superclusters to obtain supercluster luminosities , and obtained supercluster masses using the mass-to-light ratios found for local rich superclusters . Results : The BGW superclusters are very elongated systems , with shape parameter values of less than 0.2 . This value is lower than that found for the most elongated local superclusters . The values of the fourth Minkowski functional V _ { 3 } for the richer BGW superclusters ( V _ { 3 } = 7 and 10 ) show that they have a complicated and rich inner structure . We identify two Planck SZ clusters in the BGW superclusters , one in the richest BGW supercluster , and another in one of the poor BGW superclusters . The luminosities of the BGW superclusters are in the range of 1 - 8 \times 10 ^ { 13 } h ^ { -2 } L _ { \sun } , and masses in the range of 0.4 - 2.1 \times~ { } 10 ^ { 16 } h ^ { -1 } M _ { \odot } . Supercluster luminosities and masses obtained with two methods agree well . Conclusions : The BGW is a complex of massive , luminous and large superclusters with very elongated shape . The search and detailed study , including the morphology analysis of the richest superclusters and their complexes from observations and simulations can help us to understand formation and evolution of the cosmic web .