How does the author figuratively show that Arush's friends are thrilled for his return?

But we pulled at the grill [on the ground] and it gave way. and then we saw iron rings as steps leading down a shaft into a darkness without bottom. … it was a great tunnel. its walls were hard and smooth to the touch; it felt like stone, but it was not stone. on the ground there were long thin tracks of iron, but it was not iron; it felt smooth and cold as glass. we knelt, and we crawled forward, our hand groping along the iron line to see where it would lead. but there was an unbroken night ahead. what is the most likely explanation for the walls described in the bold text?

Oplano tem que apresentar atividades que proporcionem aos alunos a prática de escrita de textos dissertativos. estrutura básica: tema: como expor ideias ou defender objetivamente um ponto de vista? objetivos: o que se pretende com a atividade? estratégias: quais as principais aç? es a serem desenvolvidas? atividade: a relaç? o dos produtos que será desenvolvida pelos alunos

The invention of photography was initially important because