Complex sentence: Part of the same project that created Blue Mesa, both Morrow Point and Crystal are smaller, narrower lakes, within the Black Canyon, and though considerably harder to access than Blue Mesa, nevertheless offer visitors unique views and challenging recreational opportunities.
Split into simpler sentences: Part of the same project that created Blue Mesa, both Morrow Point and Crystal are smaller, narrower lakes, located within the Black Canyon. Though considerably harder to access than Blue Mesa, these two lakes nevertheless offer visitors unique views and challenging recreational opportunities.