barred bars cell cold confine confined contained contrast control controlled damp dank dark darkened detained door gate grille heavy held imprison imprisoned iron light locked locked in power room sealed secure secured shade shadow solid spikes square stone sunlight animal bear depression deprivation imprisonment liberty of polar prison Riga white zoo beneath grass grating grid ground house ice ice-house metal prisoner trap Underground captive captivity captured fence in jail nature out plan window bolt bolted consequences crime justice lock padlock police policing securely security barb barbed barbs barrier border boundary cerca devil's rope escape oppression sharp stängsel vallado wire zaun barbed wire razor razor wire sky wires cells doors doorways gaol inside interior serious walls accommodation airy cage caged cages prisoners steel-mesh