wall at nizwa fort oman

12th 1650 administrative ancient architectural architecture art arts authority based bin build buildings built century crossroads cruise design dirt drum east enormous era filled fire forces formidable fort fortifications historic history imam imams ingenuity like location long middle military monument mortar national natural nizwa oman omani periods powerful presiding raiding reminder rocks routes rubble rubi ruin ruins saif seat strategic stream stronghold structure sultan svisited tower travel turbulent underground vital walis wall walls warfare wealth ya