Looking at the Wall of Lava spell, I can't figure out how the height for this spell is supposed to work. Am I missing something here?
This spell creates a vertical wall of lava that is 1 inch thick for every 4 caster levels and composed of up to one 5-foot square per level. A wall of lava's maximum height cannot exceed half of its width (with a minimum height of 5 feet). The wall cannot be conjured so that it occupies the same space as a creature or object. A section of a wall of lava can be destroyed by damage (hardness 4, hp 90), but if a section is destroyed, the remaining lava in the wall immediately fills in any such hole created, reducing the wall's overall size by one 5-foot square but remaining a contiguous barrier.
So if it's height can't exceed half it's width, you need it to be 20 feet thick to have a 10 foot high wall. However, you only get 1 inch per 4 CL, so you need a CL of 960 to create a wall of lava that is taller than 5 feet!? That can't possibly be right, can it?
Ohhhh. I feel silly now. Thanks for the clarification!