For Magma Moon Marathon-
When you pass under the sets of arches that light up, they will make beeping sounds. Red makes high beeps, and blue makes low beeps. This is important. As you go past the blue dome (which is right after the arches), you might want to slow down a bit. Listen very carefully . You will hear three beeps. The beeps are a code. Remember which are high and which are low. On you next lap, go through the correct arches and the dome will open!(example- the beeps sound high, low, low. You would go through the red arch, then a blue arch, then another blue arch.)