Our guide made a most memorable trip for us. Myself and three other ladies did the 12 mile kayak trip down the Colorado river starting out at the bottom of the hoover dam. Laurie our guide was very knowledgable about the terrain, history and plants. She took us on some side canyon short hikes to hotsprings and then to the beautiful emerald caves . I would highly recommend this trip to anyone looking for a great day of sight seeing and adventure. PS- you won't go hungry the lunch they provided was delicious and plenty.