Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: A lava tube is a natural conduit formed by flowing lava which moves underneath the hardened surface of a lava flow. Mapaipi anogona kuyerera rava kubva mugomo rinoputika, kana kuti anogona kunyangarika, zvichireva kuti kuyerera kwerava kwapera, uye dombo racho radzikama ndokusiya bako refu.  Mubvunzo: Apo chubhu yerarava rinopera chii chinoreva nokuda kwokuyerera kwerarava?
kuyerera kwegiravhiti kwakamira