Learn Icelandic: Ég get aldrei fundið rásina.

In Icelandic main clauses, adverbs of frequency like aldrei (never) are placed right after the first, conjugated verb. Since get (can) is the conjugated verb, aldrei goes right after it, separating it from the main verb fundið. This happens to match the English word order perfectly!

Why is the verb for "find" written as fundið instead of the basic dictionary form finna?

The helping verb geta (can/to be able to) is unique in Icelandic because it forces the following verb into the supine form, rather than the infinitive form you might expect. The supine form of finna is fundið.

What makes rásina mean "the channel" instead of just "channel"?

The base word is rás (channel), which is a feminine noun. To say "the channel," Icelandic attaches the word "the" to the end of the noun. The -ina ending is the definite article for a feminine noun in the accusative case, which is used here because the channel is the direct object being found.